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Finding the Fourth Proportional to 159,775.74, 220,489.29 and 88,158.78

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Solution

The fourth proportional to 159,775.74, 220,489.29 and 88,158.78 is: 121,658.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,775.74 : 220,489.29 = 88,158.78 : x
  2. Step 2: Convert to fraction form
    159,775.74/220,489.29 = 88,158.78/x
  3. Step 3: Cross multiply
    159,775.74x = 220,489.29 × 88,158.78
  4. Step 4: Simplify right side
    159,775.74x = 19,438,066,809.47
  5. Step 5: Solve for x
    x = 19,438,066,809.47/159,775.74
  6. Step 6: Final answer
    x = 121,658.44

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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.