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Finding the Fourth Proportional to 129,901.97, 179,269.72 and 73,312.13

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Solution

The fourth proportional to 129,901.97, 179,269.72 and 73,312.13 is: 101,173.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,901.97 : 179,269.72 = 73,312.13 : x
  2. Step 2: Convert to fraction form
    129,901.97/179,269.72 = 73,312.13/x
  3. Step 3: Cross multiply
    129,901.97x = 179,269.72 × 73,312.13
  4. Step 4: Simplify right side
    129,901.97x = 13,142,643,938.07
  5. Step 5: Solve for x
    x = 13,142,643,938.07/129,901.97
  6. Step 6: Final answer
    x = 101,173.56

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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.