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Finding the Fourth Proportional to 139,503.91, 192,517.59 and 75,841.96

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Solution

The fourth proportional to 139,503.91, 192,517.59 and 75,841.96 is: 104,663.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,503.91 : 192,517.59 = 75,841.96 : x
  2. Step 2: Convert to fraction form
    139,503.91/192,517.59 = 75,841.96/x
  3. Step 3: Cross multiply
    139,503.91x = 192,517.59 × 75,841.96
  4. Step 4: Simplify right side
    139,503.91x = 14,600,911,360.08
  5. Step 5: Solve for x
    x = 14,600,911,360.08/139,503.91
  6. Step 6: Final answer
    x = 104,663.10

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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.