Home / 129,629.20-194,443.80-42,077.20

Finding the Fourth Proportional to 129,629.20, 194,443.80 and 42,077.20

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Solution

The fourth proportional to 129,629.20, 194,443.80 and 42,077.20 is: 63,115.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,629.20 : 194,443.80 = 42,077.20 : x
  2. Step 2: Convert to fraction form
    129,629.20/194,443.80 = 42,077.20/x
  3. Step 3: Cross multiply
    129,629.20x = 194,443.80 × 42,077.20
  4. Step 4: Simplify right side
    129,629.20x = 8,181,650,661.36
  5. Step 5: Solve for x
    x = 8,181,650,661.36/129,629.20
  6. Step 6: Final answer
    x = 63,115.80

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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.