Home / 129,781.92-194,673.12-36,287.64

Finding the Fourth Proportional to 129,781.92, 194,673.12 and 36,287.64

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Solution

The fourth proportional to 129,781.92, 194,673.12 and 36,287.64 is: 54,431.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,781.92 : 194,673.12 = 36,287.64 : x
  2. Step 2: Convert to fraction form
    129,781.92/194,673.12 = 36,287.64/x
  3. Step 3: Cross multiply
    129,781.92x = 194,673.12 × 36,287.64
  4. Step 4: Simplify right side
    129,781.92x = 7,064,228,096.24
  5. Step 5: Solve for x
    x = 7,064,228,096.24/129,781.92
  6. Step 6: Final answer
    x = 54,431.53

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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.