Home / 103,414.15-154,957.20-68,312.80

Finding the Fourth Proportional to 103,414.15, 154,957.20 and 68,312.80

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Solution

The fourth proportional to 103,414.15, 154,957.20 and 68,312.80 is: 102,360.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,414.15 : 154,957.20 = 68,312.80 : x
  2. Step 2: Convert to fraction form
    103,414.15/154,957.20 = 68,312.80/x
  3. Step 3: Cross multiply
    103,414.15x = 154,957.20 × 68,312.80
  4. Step 4: Simplify right side
    103,414.15x = 10,585,560,212.16
  5. Step 5: Solve for x
    x = 10,585,560,212.16/103,414.15
  6. Step 6: Final answer
    x = 102,360.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.