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Finding the Fourth Proportional to 148,851.90, 205,414.80 and 80,868.33

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Solution

The fourth proportional to 148,851.90, 205,414.80 and 80,868.33 is: 111,597.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,851.90 : 205,414.80 = 80,868.33 : x
  2. Step 2: Convert to fraction form
    148,851.90/205,414.80 = 80,868.33/x
  3. Step 3: Cross multiply
    148,851.90x = 205,414.80 × 80,868.33
  4. Step 4: Simplify right side
    148,851.90x = 16,611,551,833.28
  5. Step 5: Solve for x
    x = 16,611,551,833.28/148,851.90
  6. Step 6: Final answer
    x = 111,597.85

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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.