Home / 129,628.20-194,442.30-42,076.20

Finding the Fourth Proportional to 129,628.20, 194,442.30 and 42,076.20

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Solution

The fourth proportional to 129,628.20, 194,442.30 and 42,076.20 is: 63,114.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,628.20 : 194,442.30 = 42,076.20 : x
  2. Step 2: Convert to fraction form
    129,628.20/194,442.30 = 42,076.20/x
  3. Step 3: Cross multiply
    129,628.20x = 194,442.30 × 42,076.20
  4. Step 4: Simplify right side
    129,628.20x = 8,181,393,103.26
  5. Step 5: Solve for x
    x = 8,181,393,103.26/129,628.20
  6. Step 6: Final answer
    x = 63,114.30

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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.