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Finding the Fourth Proportional to 129,705.38, 194,564.04 and 39,741.65

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Solution

The fourth proportional to 129,705.38, 194,564.04 and 39,741.65 is: 59,614.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,705.38 : 194,564.04 = 39,741.65 : x
  2. Step 2: Convert to fraction form
    129,705.38/194,564.04 = 39,741.65/x
  3. Step 3: Cross multiply
    129,705.38x = 194,564.04 × 39,741.65
  4. Step 4: Simplify right side
    129,705.38x = 7,732,295,007.45
  5. Step 5: Solve for x
    x = 7,732,295,007.45/129,705.38
  6. Step 6: Final answer
    x = 59,614.30

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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.