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Finding the Fourth Proportional to 129,734.40, 194,294.40 and 87,955.20

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Solution

The fourth proportional to 129,734.40, 194,294.40 and 87,955.20 is: 131,724.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,734.40 : 194,294.40 = 87,955.20 : x
  2. Step 2: Convert to fraction form
    129,734.40/194,294.40 = 87,955.20/x
  3. Step 3: Cross multiply
    129,734.40x = 194,294.40 × 87,955.20
  4. Step 4: Simplify right side
    129,734.40x = 17,089,202,810.88
  5. Step 5: Solve for x
    x = 17,089,202,810.88/129,734.40
  6. Step 6: Final answer
    x = 131,724.53

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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.