Home / 129,989.34-179,385.30-73,404.36

Finding the Fourth Proportional to 129,989.34, 179,385.30 and 73,404.36

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Solution

The fourth proportional to 129,989.34, 179,385.30 and 73,404.36 is: 101,298.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,989.34 : 179,385.30 = 73,404.36 : x
  2. Step 2: Convert to fraction form
    129,989.34/179,385.30 = 73,404.36/x
  3. Step 3: Cross multiply
    129,989.34x = 179,385.30 × 73,404.36
  4. Step 4: Simplify right side
    129,989.34x = 13,167,663,139.91
  5. Step 5: Solve for x
    x = 13,167,663,139.91/129,989.34
  6. Step 6: Final answer
    x = 101,298.02

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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.