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Finding the Fourth Proportional to 150,642.99, 225,957.65 and 66,380.61

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Solution

The fourth proportional to 150,642.99, 225,957.65 and 66,380.61 is: 99,567.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,642.99 : 225,957.65 = 66,380.61 : x
  2. Step 2: Convert to fraction form
    150,642.99/225,957.65 = 66,380.61/x
  3. Step 3: Cross multiply
    150,642.99x = 225,957.65 × 66,380.61
  4. Step 4: Simplify right side
    150,642.99x = 14,999,207,530.00
  5. Step 5: Solve for x
    x = 14,999,207,530.00/150,642.99
  6. Step 6: Final answer
    x = 99,567.91

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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.