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Finding the Fourth Proportional to 158,608.20, 218,964.32 and 122,496.52

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Solution

The fourth proportional to 158,608.20, 218,964.32 and 122,496.52 is: 169,110.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,608.20 : 218,964.32 = 122,496.52 : x
  2. Step 2: Convert to fraction form
    158,608.20/218,964.32 = 122,496.52/x
  3. Step 3: Cross multiply
    158,608.20x = 218,964.32 × 122,496.52
  4. Step 4: Simplify right side
    158,608.20x = 26,822,367,204.17
  5. Step 5: Solve for x
    x = 26,822,367,204.17/158,608.20
  6. Step 6: Final answer
    x = 169,110.85

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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.