Home / 129,373.79-193,999.23-45,123.72

Finding the Fourth Proportional to 129,373.79, 193,999.23 and 45,123.72

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Solution

The fourth proportional to 129,373.79, 193,999.23 and 45,123.72 is: 67,664.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,373.79 : 193,999.23 = 45,123.72 : x
  2. Step 2: Convert to fraction form
    129,373.79/193,999.23 = 45,123.72/x
  3. Step 3: Cross multiply
    129,373.79x = 193,999.23 × 45,123.72
  4. Step 4: Simplify right side
    129,373.79x = 8,753,966,934.74
  5. Step 5: Solve for x
    x = 8,753,966,934.74/129,373.79
  6. Step 6: Final answer
    x = 67,664.15

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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.