Home / 129,612.20-194,418.30-76,468.10

Finding the Fourth Proportional to 129,612.20, 194,418.30 and 76,468.10

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Solution

The fourth proportional to 129,612.20, 194,418.30 and 76,468.10 is: 114,702.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,612.20 : 194,418.30 = 76,468.10 : x
  2. Step 2: Convert to fraction form
    129,612.20/194,418.30 = 76,468.10/x
  3. Step 3: Cross multiply
    129,612.20x = 194,418.30 × 76,468.10
  4. Step 4: Simplify right side
    129,612.20x = 14,866,798,006.23
  5. Step 5: Solve for x
    x = 14,866,798,006.23/129,612.20
  6. Step 6: Final answer
    x = 114,702.15

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1.5x scale

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.