Home / 153,123.44-211,319.90-85,155.60

Finding the Fourth Proportional to 153,123.44, 211,319.90 and 85,155.60

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Solution

The fourth proportional to 153,123.44, 211,319.90 and 85,155.60 is: 117,520.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,123.44 : 211,319.90 = 85,155.60 : x
  2. Step 2: Convert to fraction form
    153,123.44/211,319.90 = 85,155.60/x
  3. Step 3: Cross multiply
    153,123.44x = 211,319.90 × 85,155.60
  4. Step 4: Simplify right side
    153,123.44x = 17,995,072,450.66
  5. Step 5: Solve for x
    x = 17,995,072,450.66/153,123.44
  6. Step 6: Final answer
    x = 117,520.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.