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Finding the Fourth Proportional to 125,689.97, 173,455.25 and 69,101.45

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Solution

The fourth proportional to 125,689.97, 173,455.25 and 69,101.45 is: 95,361.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,689.97 : 173,455.25 = 69,101.45 : x
  2. Step 2: Convert to fraction form
    125,689.97/173,455.25 = 69,101.45/x
  3. Step 3: Cross multiply
    125,689.97x = 173,455.25 × 69,101.45
  4. Step 4: Simplify right side
    125,689.97x = 11,986,008,939.61
  5. Step 5: Solve for x
    x = 11,986,008,939.61/125,689.97
  6. Step 6: Final answer
    x = 95,361.70

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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.