Home / 87,371,390.40-131,057,085.60-81,986,121.60

Finding the Fourth Proportional to 87,371,390.40, 131,057,085.60 and 81,986,121.60

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Solution

The fourth proportional to 87,371,390.40, 131,057,085.60 and 81,986,121.60 is: 122,979,182.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,371,390.40 : 131,057,085.60 = 81,986,121.60 : x
  2. Step 2: Convert to fraction form
    87,371,390.40/131,057,085.60 = 81,986,121.60/x
  3. Step 3: Cross multiply
    87,371,390.40x = 131,057,085.60 × 81,986,121.60
  4. Step 4: Simplify right side
    87,371,390.40x = 10,744,862,156,543,208
  5. Step 5: Solve for x
    x = 10,744,862,156,543,208/87,371,390.40
  6. Step 6: Final answer
    x = 122,979,182.40

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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.