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Finding the Fourth Proportional to 150,292.67, 207,404.15 and 81,382.88

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Solution

The fourth proportional to 150,292.67, 207,404.15 and 81,382.88 is: 112,308.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,292.67 : 207,404.15 = 81,382.88 : x
  2. Step 2: Convert to fraction form
    150,292.67/207,404.15 = 81,382.88/x
  3. Step 3: Cross multiply
    150,292.67x = 207,404.15 × 81,382.88
  4. Step 4: Simplify right side
    150,292.67x = 16,879,145,995.90
  5. Step 5: Solve for x
    x = 16,879,145,995.90/150,292.67
  6. Step 6: Final answer
    x = 112,308.51

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1.5x scale

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.