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Finding the Fourth Proportional to 125,017.68, 172,524.30 and 68,429

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Solution

The fourth proportional to 125,017.68, 172,524.30 and 68,429 is: 94,431.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,017.68 : 172,524.30 = 68,429 : x
  2. Step 2: Convert to fraction form
    125,017.68/172,524.30 = 68,429/x
  3. Step 3: Cross multiply
    125,017.68x = 172,524.30 × 68,429
  4. Step 4: Simplify right side
    125,017.68x = 11,805,665,324.70
  5. Step 5: Solve for x
    x = 11,805,665,324.70/125,017.68
  6. Step 6: Final answer
    x = 94,431.97

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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.