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Finding the Fourth Proportional to 109,124.92, 150,610.40 and 68,860.72

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Solution

The fourth proportional to 109,124.92, 150,610.40 and 68,860.72 is: 95,039.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,124.92 : 150,610.40 = 68,860.72 : x
  2. Step 2: Convert to fraction form
    109,124.92/150,610.40 = 68,860.72/x
  3. Step 3: Cross multiply
    109,124.92x = 150,610.40 × 68,860.72
  4. Step 4: Simplify right side
    109,124.92x = 10,371,140,583.49
  5. Step 5: Solve for x
    x = 10,371,140,583.49/109,124.92
  6. Step 6: Final answer
    x = 95,039.16

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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.