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Finding the Fourth Proportional to 123,775.43, 170,808.99 and 67,186.76

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Solution

The fourth proportional to 123,775.43, 170,808.99 and 67,186.76 is: 92,717.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,775.43 : 170,808.99 = 67,186.76 : x
  2. Step 2: Convert to fraction form
    123,775.43/170,808.99 = 67,186.76/x
  3. Step 3: Cross multiply
    123,775.43x = 170,808.99 × 67,186.76
  4. Step 4: Simplify right side
    123,775.43x = 11,476,102,616.97
  5. Step 5: Solve for x
    x = 11,476,102,616.97/123,775.43
  6. Step 6: Final answer
    x = 92,717.13

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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.