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Finding the Fourth Proportional to 125,451.60, 173,135.50 and 71,744.54

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Solution

The fourth proportional to 125,451.60, 173,135.50 and 71,744.54 is: 99,014.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,451.60 : 173,135.50 = 71,744.54 : x
  2. Step 2: Convert to fraction form
    125,451.60/173,135.50 = 71,744.54/x
  3. Step 3: Cross multiply
    125,451.60x = 173,135.50 × 71,744.54
  4. Step 4: Simplify right side
    125,451.60x = 12,421,526,805.17
  5. Step 5: Solve for x
    x = 12,421,526,805.17/125,451.60
  6. Step 6: Final answer
    x = 99,014.49

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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.