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Finding the Fourth Proportional to 129,901.50, 179,264.19 and 73,311.66

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Solution

The fourth proportional to 129,901.50, 179,264.19 and 73,311.66 is: 101,170.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,901.50 : 179,264.19 = 73,311.66 : x
  2. Step 2: Convert to fraction form
    129,901.50/179,264.19 = 73,311.66/x
  3. Step 3: Cross multiply
    129,901.50x = 179,264.19 × 73,311.66
  4. Step 4: Simplify right side
    129,901.50x = 13,142,155,347.46
  5. Step 5: Solve for x
    x = 13,142,155,347.46/129,901.50
  6. Step 6: Final answer
    x = 101,170.16

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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.