Home / 129,615.20-194,398.80-36,101.60

Finding the Fourth Proportional to 129,615.20, 194,398.80 and 36,101.60

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Solution

The fourth proportional to 129,615.20, 194,398.80 and 36,101.60 is: 54,145.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,615.20 : 194,398.80 = 36,101.60 : x
  2. Step 2: Convert to fraction form
    129,615.20/194,398.80 = 36,101.60/x
  3. Step 3: Cross multiply
    129,615.20x = 194,398.80 × 36,101.60
  4. Step 4: Simplify right side
    129,615.20x = 7,018,107,718.08
  5. Step 5: Solve for x
    x = 7,018,107,718.08/129,615.20
  6. Step 6: Final answer
    x = 54,145.72

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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.