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Finding the Fourth Proportional to 115,220, 159,003.60 and 62,228

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Solution

The fourth proportional to 115,220, 159,003.60 and 62,228 is: 85,874.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,220 : 159,003.60 = 62,228 : x
  2. Step 2: Convert to fraction form
    115,220/159,003.60 = 62,228/x
  3. Step 3: Cross multiply
    115,220x = 159,003.60 × 62,228
  4. Step 4: Simplify right side
    115,220x = 9,894,476,020.80
  5. Step 5: Solve for x
    x = 9,894,476,020.80/115,220
  6. Step 6: Final answer
    x = 85,874.64

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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.