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Finding the Fourth Proportional to 125,410.80, 173,060 and 68,817.68

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Solution

The fourth proportional to 125,410.80, 173,060 and 68,817.68 is: 94,964.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,410.80 : 173,060 = 68,817.68 : x
  2. Step 2: Convert to fraction form
    125,410.80/173,060 = 68,817.68/x
  3. Step 3: Cross multiply
    125,410.80x = 173,060 × 68,817.68
  4. Step 4: Simplify right side
    125,410.80x = 11,909,587,700.80
  5. Step 5: Solve for x
    x = 11,909,587,700.80/125,410.80
  6. Step 6: Final answer
    x = 94,964.61

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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.