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Finding the Fourth Proportional to 129,689.68, 194,551.52 and 50,793.64

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Solution

The fourth proportional to 129,689.68, 194,551.52 and 50,793.64 is: 76,197.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,689.68 : 194,551.52 = 50,793.64 : x
  2. Step 2: Convert to fraction form
    129,689.68/194,551.52 = 50,793.64/x
  3. Step 3: Cross multiply
    129,689.68x = 194,551.52 × 50,793.64
  4. Step 4: Simplify right side
    129,689.68x = 9,881,979,868.33
  5. Step 5: Solve for x
    x = 9,881,979,868.33/129,689.68
  6. Step 6: Final answer
    x = 76,197.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.