Home / 129,449.82-194,109.79-75,432

Finding the Fourth Proportional to 129,449.82, 194,109.79 and 75,432

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Solution

The fourth proportional to 129,449.82, 194,109.79 and 75,432 is: 113,110.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,449.82 : 194,109.79 = 75,432 : x
  2. Step 2: Convert to fraction form
    129,449.82/194,109.79 = 75,432/x
  3. Step 3: Cross multiply
    129,449.82x = 194,109.79 × 75,432
  4. Step 4: Simplify right side
    129,449.82x = 14,642,089,773.57
  5. Step 5: Solve for x
    x = 14,642,089,773.57/129,449.82
  6. Step 6: Final answer
    x = 113,110.16

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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.