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Finding the Fourth Proportional to 125,768, 173,561 and 68,407.88

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Solution

The fourth proportional to 125,768, 173,561 and 68,407.88 is: 94,403.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,768 : 173,561 = 68,407.88 : x
  2. Step 2: Convert to fraction form
    125,768/173,561 = 68,407.88/x
  3. Step 3: Cross multiply
    125,768x = 173,561 × 68,407.88
  4. Step 4: Simplify right side
    125,768x = 11,872,940,060.68
  5. Step 5: Solve for x
    x = 11,872,940,060.68/125,768
  6. Step 6: Final answer
    x = 94,403.51

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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.