Home / 129,731.20-194,582.40-106,316.80

Finding the Fourth Proportional to 129,731.20, 194,582.40 and 106,316.80

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Solution

The fourth proportional to 129,731.20, 194,582.40 and 106,316.80 is: 159,463.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,731.20 : 194,582.40 = 106,316.80 : x
  2. Step 2: Convert to fraction form
    129,731.20/194,582.40 = 106,316.80/x
  3. Step 3: Cross multiply
    129,731.20x = 194,582.40 × 106,316.80
  4. Step 4: Simplify right side
    129,731.20x = 20,687,378,104.32
  5. Step 5: Solve for x
    x = 20,687,378,104.32/129,731.20
  6. Step 6: Final answer
    x = 159,463.40

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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.