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Finding the Fourth Proportional to 159,731.88, 220,430.61 and 88,110.87

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Solution

The fourth proportional to 159,731.88, 220,430.61 and 88,110.87 is: 121,593.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,731.88 : 220,430.61 = 88,110.87 : x
  2. Step 2: Convert to fraction form
    159,731.88/220,430.61 = 88,110.87/x
  3. Step 3: Cross multiply
    159,731.88x = 220,430.61 × 88,110.87
  4. Step 4: Simplify right side
    159,731.88x = 19,422,332,821.73
  5. Step 5: Solve for x
    x = 19,422,332,821.73/159,731.88
  6. Step 6: Final answer
    x = 121,593.34

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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.