Home / 129,724.98-179,020.71-73,136.22

Finding the Fourth Proportional to 129,724.98, 179,020.71 and 73,136.22

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Solution

The fourth proportional to 129,724.98, 179,020.71 and 73,136.22 is: 100,928.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,724.98 : 179,020.71 = 73,136.22 : x
  2. Step 2: Convert to fraction form
    129,724.98/179,020.71 = 73,136.22/x
  3. Step 3: Cross multiply
    129,724.98x = 179,020.71 × 73,136.22
  4. Step 4: Simplify right side
    129,724.98x = 13,092,898,031.12
  5. Step 5: Solve for x
    x = 13,092,898,031.12/129,724.98
  6. Step 6: Final answer
    x = 100,928.12

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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.