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Finding the Fourth Proportional to 148,906.55, 205,398.48 and 88,433.57

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Solution

The fourth proportional to 148,906.55, 205,398.48 and 88,433.57 is: 121,983.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,906.55 : 205,398.48 = 88,433.57 : x
  2. Step 2: Convert to fraction form
    148,906.55/205,398.48 = 88,433.57/x
  3. Step 3: Cross multiply
    148,906.55x = 205,398.48 × 88,433.57
  4. Step 4: Simplify right side
    148,906.55x = 18,164,121,704.10
  5. Step 5: Solve for x
    x = 18,164,121,704.10/148,906.55
  6. Step 6: Final answer
    x = 121,983.36

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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.