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Finding the Fourth Proportional to 123,609.97, 170,527.39 and 83,309.05

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Solution

The fourth proportional to 123,609.97, 170,527.39 and 83,309.05 is: 114,929.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,609.97 : 170,527.39 = 83,309.05 : x
  2. Step 2: Convert to fraction form
    123,609.97/170,527.39 = 83,309.05/x
  3. Step 3: Cross multiply
    123,609.97x = 170,527.39 × 83,309.05
  4. Step 4: Simplify right side
    123,609.97x = 14,206,474,859.88
  5. Step 5: Solve for x
    x = 14,206,474,859.88/123,609.97
  6. Step 6: Final answer
    x = 114,929.85

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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.