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Finding the Fourth Proportional to 166,720.65, 250,127.78 and 66,950.90

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Solution

The fourth proportional to 166,720.65, 250,127.78 and 66,950.90 is: 100,445.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,720.65 : 250,127.78 = 66,950.90 : x
  2. Step 2: Convert to fraction form
    166,720.65/250,127.78 = 66,950.90/x
  3. Step 3: Cross multiply
    166,720.65x = 250,127.78 × 66,950.90
  4. Step 4: Simplify right side
    166,720.65x = 16,746,279,294.15
  5. Step 5: Solve for x
    x = 16,746,279,294.15/166,720.65
  6. Step 6: Final answer
    x = 100,445.14

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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.