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Finding the Fourth Proportional to 149,619.65, 206,479.19 and 89,195.27

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Solution

The fourth proportional to 149,619.65, 206,479.19 and 89,195.27 is: 123,091.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,619.65 : 206,479.19 = 89,195.27 : x
  2. Step 2: Convert to fraction form
    149,619.65/206,479.19 = 89,195.27/x
  3. Step 3: Cross multiply
    149,619.65x = 206,479.19 × 89,195.27
  4. Step 4: Simplify right side
    149,619.65x = 18,416,966,292.02
  5. Step 5: Solve for x
    x = 18,416,966,292.02/149,619.65
  6. Step 6: Final answer
    x = 123,091.90

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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.