Home / 129,426.80-194,140.20-123,781.10

Finding the Fourth Proportional to 129,426.80, 194,140.20 and 123,781.10

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Solution

The fourth proportional to 129,426.80, 194,140.20 and 123,781.10 is: 185,671.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,426.80 : 194,140.20 = 123,781.10 : x
  2. Step 2: Convert to fraction form
    129,426.80/194,140.20 = 123,781.10/x
  3. Step 3: Cross multiply
    129,426.80x = 194,140.20 × 123,781.10
  4. Step 4: Simplify right side
    129,426.80x = 24,030,887,510.22
  5. Step 5: Solve for x
    x = 24,030,887,510.22/129,426.80
  6. Step 6: Final answer
    x = 185,671.65

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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.