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Finding the Fourth Proportional to 148,879.74, 205,454.88 and 80,897.28

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Solution

The fourth proportional to 148,879.74, 205,454.88 and 80,897.28 is: 111,638.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,879.74 : 205,454.88 = 80,897.28 : x
  2. Step 2: Convert to fraction form
    148,879.74/205,454.88 = 80,897.28/x
  3. Step 3: Cross multiply
    148,879.74x = 205,454.88 × 80,897.28
  4. Step 4: Simplify right side
    148,879.74x = 16,620,740,954.73
  5. Step 5: Solve for x
    x = 16,620,740,954.73/148,879.74
  6. Step 6: Final answer
    x = 111,638.70

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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.