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Finding the Fourth Proportional to 139,744.80, 192,841.47 and 76,082.46

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Solution

The fourth proportional to 139,744.80, 192,841.47 and 76,082.46 is: 104,990.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,744.80 : 192,841.47 = 76,082.46 : x
  2. Step 2: Convert to fraction form
    139,744.80/192,841.47 = 76,082.46/x
  3. Step 3: Cross multiply
    139,744.80x = 192,841.47 × 76,082.46
  4. Step 4: Simplify right side
    139,744.80x = 14,671,853,427.62
  5. Step 5: Solve for x
    x = 14,671,853,427.62/139,744.80
  6. Step 6: Final answer
    x = 104,990.34

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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.