Home / 89,858,666.40-134,787,999.60-86,331,472.80

Finding the Fourth Proportional to 89,858,666.40, 134,787,999.60 and 86,331,472.80

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Solution

The fourth proportional to 89,858,666.40, 134,787,999.60 and 86,331,472.80 is: 129,497,209.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,858,666.40 : 134,787,999.60 = 86,331,472.80 : x
  2. Step 2: Convert to fraction form
    89,858,666.40/134,787,999.60 = 86,331,472.80/x
  3. Step 3: Cross multiply
    89,858,666.40x = 134,787,999.60 × 86,331,472.80
  4. Step 4: Simplify right side
    89,858,666.40x = 11,636,446,521,233,810
  5. Step 5: Solve for x
    x = 11,636,446,521,233,810/89,858,666.40
  6. Step 6: Final answer
    x = 129,497,209.20

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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.