Home / 135,728.19-187,309.90-82,002.81

Finding the Fourth Proportional to 135,728.19, 187,309.90 and 82,002.81

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Solution

The fourth proportional to 135,728.19, 187,309.90 and 82,002.81 is: 113,166.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,728.19 : 187,309.90 = 82,002.81 : x
  2. Step 2: Convert to fraction form
    135,728.19/187,309.90 = 82,002.81/x
  3. Step 3: Cross multiply
    135,728.19x = 187,309.90 × 82,002.81
  4. Step 4: Simplify right side
    135,728.19x = 15,359,938,945.73
  5. Step 5: Solve for x
    x = 15,359,938,945.73/135,728.19
  6. Step 6: Final answer
    x = 113,166.90

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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.