Home / 85,192,234.90-127,788,352.35-80,153,386.90

Finding the Fourth Proportional to 85,192,234.90, 127,788,352.35 and 80,153,386.90

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Solution

The fourth proportional to 85,192,234.90, 127,788,352.35 and 80,153,386.90 is: 120,230,080.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,192,234.90 : 127,788,352.35 = 80,153,386.90 : x
  2. Step 2: Convert to fraction form
    85,192,234.90/127,788,352.35 = 80,153,386.90/x
  3. Step 3: Cross multiply
    85,192,234.90x = 127,788,352.35 × 80,153,386.90
  4. Step 4: Simplify right side
    85,192,234.90x = 10,242,669,247,223,074
  5. Step 5: Solve for x
    x = 10,242,669,247,223,074/85,192,234.90
  6. Step 6: Final answer
    x = 120,230,080.35

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.