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Finding the Fourth Proportional to 124,636.68, 171,995.88 and 68,049

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Solution

The fourth proportional to 124,636.68, 171,995.88 and 68,049 is: 93,906.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,636.68 : 171,995.88 = 68,049 : x
  2. Step 2: Convert to fraction form
    124,636.68/171,995.88 = 68,049/x
  3. Step 3: Cross multiply
    124,636.68x = 171,995.88 × 68,049
  4. Step 4: Simplify right side
    124,636.68x = 11,704,147,638.12
  5. Step 5: Solve for x
    x = 11,704,147,638.12/124,636.68
  6. Step 6: Final answer
    x = 93,906.12

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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.