Home / 129,308.40-194,166.60-76,951.56

Finding the Fourth Proportional to 129,308.40, 194,166.60 and 76,951.56

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Solution

The fourth proportional to 129,308.40, 194,166.60 and 76,951.56 is: 115,548.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,308.40 : 194,166.60 = 76,951.56 : x
  2. Step 2: Convert to fraction form
    129,308.40/194,166.60 = 76,951.56/x
  3. Step 3: Cross multiply
    129,308.40x = 194,166.60 × 76,951.56
  4. Step 4: Simplify right side
    129,308.40x = 14,941,422,769.90
  5. Step 5: Solve for x
    x = 14,941,422,769.90/129,308.40
  6. Step 6: Final answer
    x = 115,548.74

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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.