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Finding the Fourth Proportional to 136,171.80, 187,922.43 and 82,426.41

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Solution

The fourth proportional to 136,171.80, 187,922.43 and 82,426.41 is: 113,751.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,171.80 : 187,922.43 = 82,426.41 : x
  2. Step 2: Convert to fraction form
    136,171.80/187,922.43 = 82,426.41/x
  3. Step 3: Cross multiply
    136,171.80x = 187,922.43 × 82,426.41
  4. Step 4: Simplify right side
    136,171.80x = 15,489,771,263.38
  5. Step 5: Solve for x
    x = 15,489,771,263.38/136,171.80
  6. Step 6: Final answer
    x = 113,751.68

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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.