Home / 129,634.43-178,864.20-73,045.80

Finding the Fourth Proportional to 129,634.43, 178,864.20 and 73,045.80

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Solution

The fourth proportional to 129,634.43, 178,864.20 and 73,045.80 is: 100,785.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,634.43 : 178,864.20 = 73,045.80 : x
  2. Step 2: Convert to fraction form
    129,634.43/178,864.20 = 73,045.80/x
  3. Step 3: Cross multiply
    129,634.43x = 178,864.20 × 73,045.80
  4. Step 4: Simplify right side
    129,634.43x = 13,065,278,580.36
  5. Step 5: Solve for x
    x = 13,065,278,580.36/129,634.43
  6. Step 6: Final answer
    x = 100,785.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.