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Finding the Fourth Proportional to 150,391.89, 207,540.78 and 89,965.08

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Solution

The fourth proportional to 150,391.89, 207,540.78 and 89,965.08 is: 124,151.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,391.89 : 207,540.78 = 89,965.08 : x
  2. Step 2: Convert to fraction form
    150,391.89/207,540.78 = 89,965.08/x
  3. Step 3: Cross multiply
    150,391.89x = 207,540.78 × 89,965.08
  4. Step 4: Simplify right side
    150,391.89x = 18,671,422,875.96
  5. Step 5: Solve for x
    x = 18,671,422,875.96/150,391.89
  6. Step 6: Final answer
    x = 124,151.79

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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.