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Finding the Fourth Proportional to 129,951.52, 179,169.77 and 99,362.14

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Solution

The fourth proportional to 129,951.52, 179,169.77 and 99,362.14 is: 136,994.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,951.52 : 179,169.77 = 99,362.14 : x
  2. Step 2: Convert to fraction form
    129,951.52/179,169.77 = 99,362.14/x
  3. Step 3: Cross multiply
    129,951.52x = 179,169.77 × 99,362.14
  4. Step 4: Simplify right side
    129,951.52x = 17,802,691,570.99
  5. Step 5: Solve for x
    x = 17,802,691,570.99/129,951.52
  6. Step 6: Final answer
    x = 136,994.87

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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.