Home / 129,770.85-179,053.11-73,171.29

Finding the Fourth Proportional to 129,770.85, 179,053.11 and 73,171.29

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Solution

The fourth proportional to 129,770.85, 179,053.11 and 73,171.29 is: 100,959.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,770.85 : 179,053.11 = 73,171.29 : x
  2. Step 2: Convert to fraction form
    129,770.85/179,053.11 = 73,171.29/x
  3. Step 3: Cross multiply
    129,770.85x = 179,053.11 × 73,171.29
  4. Step 4: Simplify right side
    129,770.85x = 13,101,547,037.21
  5. Step 5: Solve for x
    x = 13,101,547,037.21/129,770.85
  6. Step 6: Final answer
    x = 100,959.09

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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.