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Finding the Fourth Proportional to 148,562.19, 205,015.20 and 80,578.89

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Solution

The fourth proportional to 148,562.19, 205,015.20 and 80,578.89 is: 111,198.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,562.19 : 205,015.20 = 80,578.89 : x
  2. Step 2: Convert to fraction form
    148,562.19/205,015.20 = 80,578.89/x
  3. Step 3: Cross multiply
    148,562.19x = 205,015.20 × 80,578.89
  4. Step 4: Simplify right side
    148,562.19x = 16,519,897,249.13
  5. Step 5: Solve for x
    x = 16,519,897,249.13/148,562.19
  6. Step 6: Final answer
    x = 111,198.53

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1.5x scale

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.