Home / 129,741.60-194,612.40-98,248.80

Finding the Fourth Proportional to 129,741.60, 194,612.40 and 98,248.80

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Solution

The fourth proportional to 129,741.60, 194,612.40 and 98,248.80 is: 147,373.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,741.60 : 194,612.40 = 98,248.80 : x
  2. Step 2: Convert to fraction form
    129,741.60/194,612.40 = 98,248.80/x
  3. Step 3: Cross multiply
    129,741.60x = 194,612.40 × 98,248.80
  4. Step 4: Simplify right side
    129,741.60x = 19,120,434,765.12
  5. Step 5: Solve for x
    x = 19,120,434,765.12/129,741.60
  6. Step 6: Final answer
    x = 147,373.20

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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.