Home / 129,631.56-194,448.12-36,138.12

Finding the Fourth Proportional to 129,631.56, 194,448.12 and 36,138.12

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Solution

The fourth proportional to 129,631.56, 194,448.12 and 36,138.12 is: 54,207.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,631.56 : 194,448.12 = 36,138.12 : x
  2. Step 2: Convert to fraction form
    129,631.56/194,448.12 = 36,138.12/x
  3. Step 3: Cross multiply
    129,631.56x = 194,448.12 × 36,138.12
  4. Step 4: Simplify right side
    129,631.56x = 7,026,989,494.33
  5. Step 5: Solve for x
    x = 7,026,989,494.33/129,631.56
  6. Step 6: Final answer
    x = 54,207.40

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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.