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Finding the Fourth Proportional to 148,696.10, 205,201.17 and 80,713.20

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Solution

The fourth proportional to 148,696.10, 205,201.17 and 80,713.20 is: 111,384.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,696.10 : 205,201.17 = 80,713.20 : x
  2. Step 2: Convert to fraction form
    148,696.10/205,201.17 = 80,713.20/x
  3. Step 3: Cross multiply
    148,696.10x = 205,201.17 × 80,713.20
  4. Step 4: Simplify right side
    148,696.10x = 16,562,443,074.44
  5. Step 5: Solve for x
    x = 16,562,443,074.44/148,696.10
  6. Step 6: Final answer
    x = 111,384.52

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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.