Home / 148,902.24-205,485.93-80,919.78

Finding the Fourth Proportional to 148,902.24, 205,485.93 and 80,919.78

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Solution

The fourth proportional to 148,902.24, 205,485.93 and 80,919.78 is: 111,669.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,902.24 : 205,485.93 = 80,919.78 : x
  2. Step 2: Convert to fraction form
    148,902.24/205,485.93 = 80,919.78/x
  3. Step 3: Cross multiply
    148,902.24x = 205,485.93 × 80,919.78
  4. Step 4: Simplify right side
    148,902.24x = 16,627,876,248.70
  5. Step 5: Solve for x
    x = 16,627,876,248.70/148,902.24
  6. Step 6: Final answer
    x = 111,669.75

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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.