Home / 129,780.10-194,734.95-73,663.30

Finding the Fourth Proportional to 129,780.10, 194,734.95 and 73,663.30

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Solution

The fourth proportional to 129,780.10, 194,734.95 and 73,663.30 is: 110,531.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,780.10 : 194,734.95 = 73,663.30 : x
  2. Step 2: Convert to fraction form
    129,780.10/194,734.95 = 73,663.30/x
  3. Step 3: Cross multiply
    129,780.10x = 194,734.95 × 73,663.30
  4. Step 4: Simplify right side
    129,780.10x = 14,344,819,042.34
  5. Step 5: Solve for x
    x = 14,344,819,042.34/129,780.10
  6. Step 6: Final answer
    x = 110,531.73

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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.