Home / 129,877.10-194,815.65-103,633.10

Finding the Fourth Proportional to 129,877.10, 194,815.65 and 103,633.10

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Solution

The fourth proportional to 129,877.10, 194,815.65 and 103,633.10 is: 155,449.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,877.10 : 194,815.65 = 103,633.10 : x
  2. Step 2: Convert to fraction form
    129,877.10/194,815.65 = 103,633.10/x
  3. Step 3: Cross multiply
    129,877.10x = 194,815.65 × 103,633.10
  4. Step 4: Simplify right side
    129,877.10x = 20,189,349,738.02
  5. Step 5: Solve for x
    x = 20,189,349,738.02/129,877.10
  6. Step 6: Final answer
    x = 155,449.65

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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.