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Finding the Fourth Proportional to 125,244.54, 172,836.45 and 68,655.78

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Solution

The fourth proportional to 125,244.54, 172,836.45 and 68,655.78 is: 94,744.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,244.54 : 172,836.45 = 68,655.78 : x
  2. Step 2: Convert to fraction form
    125,244.54/172,836.45 = 68,655.78/x
  3. Step 3: Cross multiply
    125,244.54x = 172,836.45 × 68,655.78
  4. Step 4: Simplify right side
    125,244.54x = 11,866,221,287.18
  5. Step 5: Solve for x
    x = 11,866,221,287.18/125,244.54
  6. Step 6: Final answer
    x = 94,744.42

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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.