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Finding the Fourth Proportional to 124,806.54, 172,233.11 and 68,217.91

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Solution

The fourth proportional to 124,806.54, 172,233.11 and 68,217.91 is: 94,140.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,806.54 : 172,233.11 = 68,217.91 : x
  2. Step 2: Convert to fraction form
    124,806.54/172,233.11 = 68,217.91/x
  3. Step 3: Cross multiply
    124,806.54x = 172,233.11 × 68,217.91
  4. Step 4: Simplify right side
    124,806.54x = 11,749,382,797.00
  5. Step 5: Solve for x
    x = 11,749,382,797.00/124,806.54
  6. Step 6: Final answer
    x = 94,140.76

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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.