Home / 129,805.41-179,139.83-73,215.57

Finding the Fourth Proportional to 129,805.41, 179,139.83 and 73,215.57

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Solution

The fourth proportional to 129,805.41, 179,139.83 and 73,215.57 is: 101,042.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,805.41 : 179,139.83 = 73,215.57 : x
  2. Step 2: Convert to fraction form
    129,805.41/179,139.83 = 73,215.57/x
  3. Step 3: Cross multiply
    129,805.41x = 179,139.83 × 73,215.57
  4. Step 4: Simplify right side
    129,805.41x = 13,115,824,397.08
  5. Step 5: Solve for x
    x = 13,115,824,397.08/129,805.41
  6. Step 6: Final answer
    x = 101,042.20

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1.5x scale

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.