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Finding the Fourth Proportional to 129,552.65, 193,890.03 and 79,664.34

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Solution

The fourth proportional to 129,552.65, 193,890.03 and 79,664.34 is: 119,226.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,552.65 : 193,890.03 = 79,664.34 : x
  2. Step 2: Convert to fraction form
    129,552.65/193,890.03 = 79,664.34/x
  3. Step 3: Cross multiply
    129,552.65x = 193,890.03 × 79,664.34
  4. Step 4: Simplify right side
    129,552.65x = 15,446,121,272.53
  5. Step 5: Solve for x
    x = 15,446,121,272.53/129,552.65
  6. Step 6: Final answer
    x = 119,226.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.