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Finding the Fourth Proportional to 168,502.50, 252,948.15 and 85,571.46

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Solution

The fourth proportional to 168,502.50, 252,948.15 and 85,571.46 is: 128,455.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,502.50 : 252,948.15 = 85,571.46 : x
  2. Step 2: Convert to fraction form
    168,502.50/252,948.15 = 85,571.46/x
  3. Step 3: Cross multiply
    168,502.50x = 252,948.15 × 85,571.46
  4. Step 4: Simplify right side
    168,502.50x = 21,645,142,499.80
  5. Step 5: Solve for x
    x = 21,645,142,499.80/168,502.50
  6. Step 6: Final answer
    x = 128,455.91

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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.