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Finding the Fourth Proportional to 125,339.28, 172,965.24 and 68,750.16

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Solution

The fourth proportional to 125,339.28, 172,965.24 and 68,750.16 is: 94,873.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,339.28 : 172,965.24 = 68,750.16 : x
  2. Step 2: Convert to fraction form
    125,339.28/172,965.24 = 68,750.16/x
  3. Step 3: Cross multiply
    125,339.28x = 172,965.24 × 68,750.16
  4. Step 4: Simplify right side
    125,339.28x = 11,891,387,924.44
  5. Step 5: Solve for x
    x = 11,891,387,924.44/125,339.28
  6. Step 6: Final answer
    x = 94,873.59

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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.