Home / 129,928.88-194,893.32-31,432.88

Finding the Fourth Proportional to 129,928.88, 194,893.32 and 31,432.88

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Solution

The fourth proportional to 129,928.88, 194,893.32 and 31,432.88 is: 47,149.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,928.88 : 194,893.32 = 31,432.88 : x
  2. Step 2: Convert to fraction form
    129,928.88/194,893.32 = 31,432.88/x
  3. Step 3: Cross multiply
    129,928.88x = 194,893.32 × 31,432.88
  4. Step 4: Simplify right side
    129,928.88x = 6,126,057,365.90
  5. Step 5: Solve for x
    x = 6,126,057,365.90/129,928.88
  6. Step 6: Final answer
    x = 47,149.31

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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.