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Finding the Fourth Proportional to 159,881.17, 220,636.72 and 88,261.78

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Solution

The fourth proportional to 159,881.17, 220,636.72 and 88,261.78 is: 121,801.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,881.17 : 220,636.72 = 88,261.78 : x
  2. Step 2: Convert to fraction form
    159,881.17/220,636.72 = 88,261.78/x
  3. Step 3: Cross multiply
    159,881.17x = 220,636.72 × 88,261.78
  4. Step 4: Simplify right side
    159,881.17x = 19,473,789,447.50
  5. Step 5: Solve for x
    x = 19,473,789,447.50/159,881.17
  6. Step 6: Final answer
    x = 121,801.65

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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.