Home / 82,174.28-122,666.98-72,209.78

Finding the Fourth Proportional to 82,174.28, 122,666.98 and 72,209.78

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Solution

The fourth proportional to 82,174.28, 122,666.98 and 72,209.78 is: 107,792.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,174.28 : 122,666.98 = 72,209.78 : x
  2. Step 2: Convert to fraction form
    82,174.28/122,666.98 = 72,209.78/x
  3. Step 3: Cross multiply
    82,174.28x = 122,666.98 × 72,209.78
  4. Step 4: Simplify right side
    82,174.28x = 8,857,755,639.06
  5. Step 5: Solve for x
    x = 8,857,755,639.06/82,174.28
  6. Step 6: Final answer
    x = 107,792.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.