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Finding the Fourth Proportional to 124,752.53, 172,158.57 and 67,391.84

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Solution

The fourth proportional to 124,752.53, 172,158.57 and 67,391.84 is: 93,000.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,752.53 : 172,158.57 = 67,391.84 : x
  2. Step 2: Convert to fraction form
    124,752.53/172,158.57 = 67,391.84/x
  3. Step 3: Cross multiply
    124,752.53x = 172,158.57 × 67,391.84
  4. Step 4: Simplify right side
    124,752.53x = 11,602,081,943.28
  5. Step 5: Solve for x
    x = 11,602,081,943.28/124,752.53
  6. Step 6: Final answer
    x = 93,000.78

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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.