Home / 129,720.72-194,581.62-36,227.28

Finding the Fourth Proportional to 129,720.72, 194,581.62 and 36,227.28

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Solution

The fourth proportional to 129,720.72, 194,581.62 and 36,227.28 is: 54,341.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,720.72 : 194,581.62 = 36,227.28 : x
  2. Step 2: Convert to fraction form
    129,720.72/194,581.62 = 36,227.28/x
  3. Step 3: Cross multiply
    129,720.72x = 194,581.62 × 36,227.28
  4. Step 4: Simplify right side
    129,720.72x = 7,049,162,830.59
  5. Step 5: Solve for x
    x = 7,049,162,830.59/129,720.72
  6. Step 6: Final answer
    x = 54,341.07

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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.