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Finding the Fourth Proportional to 148,689.75, 205,192.06 and 80,706.74

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Solution

The fourth proportional to 148,689.75, 205,192.06 and 80,706.74 is: 111,375.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,689.75 : 205,192.06 = 80,706.74 : x
  2. Step 2: Convert to fraction form
    148,689.75/205,192.06 = 80,706.74/x
  3. Step 3: Cross multiply
    148,689.75x = 205,192.06 × 80,706.74
  4. Step 4: Simplify right side
    148,689.75x = 16,560,381,778.23
  5. Step 5: Solve for x
    x = 16,560,381,778.23/148,689.75
  6. Step 6: Final answer
    x = 111,375.41

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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.