Home / 129,321.20-194,127.60-99,869.60

Finding the Fourth Proportional to 129,321.20, 194,127.60 and 99,869.60

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Solution

The fourth proportional to 129,321.20, 194,127.60 and 99,869.60 is: 149,917.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,321.20 : 194,127.60 = 99,869.60 : x
  2. Step 2: Convert to fraction form
    129,321.20/194,127.60 = 99,869.60/x
  3. Step 3: Cross multiply
    129,321.20x = 194,127.60 × 99,869.60
  4. Step 4: Simplify right side
    129,321.20x = 19,387,445,760.96
  5. Step 5: Solve for x
    x = 19,387,445,760.96/129,321.20
  6. Step 6: Final answer
    x = 149,917.00

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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.