Home / 85,065,426.60-127,598,139.90-80,586,450.60

Finding the Fourth Proportional to 85,065,426.60, 127,598,139.90 and 80,586,450.60

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Solution

The fourth proportional to 85,065,426.60, 127,598,139.90 and 80,586,450.60 is: 120,879,675.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,065,426.60 : 127,598,139.90 = 80,586,450.60 : x
  2. Step 2: Convert to fraction form
    85,065,426.60/127,598,139.90 = 80,586,450.60/x
  3. Step 3: Cross multiply
    85,065,426.60x = 127,598,139.90 × 80,586,450.60
  4. Step 4: Simplify right side
    85,065,426.60x = 10,282,681,197,703,238
  5. Step 5: Solve for x
    x = 10,282,681,197,703,238/85,065,426.60
  6. Step 6: Final answer
    x = 120,879,675.90

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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.