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Finding the Fourth Proportional to 125,459.88, 173,061.54 and 80,747.88

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Solution

The fourth proportional to 125,459.88, 173,061.54 and 80,747.88 is: 111,385.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,459.88 : 173,061.54 = 80,747.88 : x
  2. Step 2: Convert to fraction form
    125,459.88/173,061.54 = 80,747.88/x
  3. Step 3: Cross multiply
    125,459.88x = 173,061.54 × 80,747.88
  4. Step 4: Simplify right side
    125,459.88x = 13,974,352,464.54
  5. Step 5: Solve for x
    x = 13,974,352,464.54/125,459.88
  6. Step 6: Final answer
    x = 111,385.03

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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.