Home / 129,921.60-194,882.40-103,677.60

Finding the Fourth Proportional to 129,921.60, 194,882.40 and 103,677.60

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Solution

The fourth proportional to 129,921.60, 194,882.40 and 103,677.60 is: 155,516.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,921.60 : 194,882.40 = 103,677.60 : x
  2. Step 2: Convert to fraction form
    129,921.60/194,882.40 = 103,677.60/x
  3. Step 3: Cross multiply
    129,921.60x = 194,882.40 × 103,677.60
  4. Step 4: Simplify right side
    129,921.60x = 20,204,939,514.24
  5. Step 5: Solve for x
    x = 20,204,939,514.24/129,921.60
  6. Step 6: Final answer
    x = 155,516.40

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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.