Home / 129,419.08-194,129.82-40,670.62

Finding the Fourth Proportional to 129,419.08, 194,129.82 and 40,670.62

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Solution

The fourth proportional to 129,419.08, 194,129.82 and 40,670.62 is: 61,006.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,419.08 : 194,129.82 = 40,670.62 : x
  2. Step 2: Convert to fraction form
    129,419.08/194,129.82 = 40,670.62/x
  3. Step 3: Cross multiply
    129,419.08x = 194,129.82 × 40,670.62
  4. Step 4: Simplify right side
    129,419.08x = 7,895,380,139.89
  5. Step 5: Solve for x
    x = 7,895,380,139.89/129,419.08
  6. Step 6: Final answer
    x = 61,006.31

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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.