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Finding the Fourth Proportional to 129,757.32, 179,064.81 and 73,168.29

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Solution

The fourth proportional to 129,757.32, 179,064.81 and 73,168.29 is: 100,972.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,757.32 : 179,064.81 = 73,168.29 : x
  2. Step 2: Convert to fraction form
    129,757.32/179,064.81 = 73,168.29/x
  3. Step 3: Cross multiply
    129,757.32x = 179,064.81 × 73,168.29
  4. Step 4: Simplify right side
    129,757.32x = 13,101,865,946.87
  5. Step 5: Solve for x
    x = 13,101,865,946.87/129,757.32
  6. Step 6: Final answer
    x = 100,972.08

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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.