Home / 124,553.28-171,920.16-86,839.68

Finding the Fourth Proportional to 124,553.28, 171,920.16 and 86,839.68

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Solution

The fourth proportional to 124,553.28, 171,920.16 and 86,839.68 is: 119,864.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,553.28 : 171,920.16 = 86,839.68 : x
  2. Step 2: Convert to fraction form
    124,553.28/171,920.16 = 86,839.68/x
  3. Step 3: Cross multiply
    124,553.28x = 171,920.16 × 86,839.68
  4. Step 4: Simplify right side
    124,553.28x = 14,929,491,679.95
  5. Step 5: Solve for x
    x = 14,929,491,679.95/124,553.28
  6. Step 6: Final answer
    x = 119,864.30

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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.