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Finding the Fourth Proportional to 125,630.73, 173,385.16 and 74,643.89

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Solution

The fourth proportional to 125,630.73, 173,385.16 and 74,643.89 is: 103,017.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,630.73 : 173,385.16 = 74,643.89 : x
  2. Step 2: Convert to fraction form
    125,630.73/173,385.16 = 74,643.89/x
  3. Step 3: Cross multiply
    125,630.73x = 173,385.16 × 74,643.89
  4. Step 4: Simplify right side
    125,630.73x = 12,942,141,757.14
  5. Step 5: Solve for x
    x = 12,942,141,757.14/125,630.73
  6. Step 6: Final answer
    x = 103,017.33

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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.