Home / 129,739.60-194,455.80-96,869.20

Finding the Fourth Proportional to 129,739.60, 194,455.80 and 96,869.20

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Solution

The fourth proportional to 129,739.60, 194,455.80 and 96,869.20 is: 145,189.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,739.60 : 194,455.80 = 96,869.20 : x
  2. Step 2: Convert to fraction form
    129,739.60/194,455.80 = 96,869.20/x
  3. Step 3: Cross multiply
    129,739.60x = 194,455.80 × 96,869.20
  4. Step 4: Simplify right side
    129,739.60x = 18,836,777,781.36
  5. Step 5: Solve for x
    x = 18,836,777,781.36/129,739.60
  6. Step 6: Final answer
    x = 145,189.12

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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.