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Finding the Fourth Proportional to 135,010.80, 202,516.20 and 81,866.70

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Solution

The fourth proportional to 135,010.80, 202,516.20 and 81,866.70 is: 122,800.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,010.80 : 202,516.20 = 81,866.70 : x
  2. Step 2: Convert to fraction form
    135,010.80/202,516.20 = 81,866.70/x
  3. Step 3: Cross multiply
    135,010.80x = 202,516.20 × 81,866.70
  4. Step 4: Simplify right side
    135,010.80x = 16,579,332,990.54
  5. Step 5: Solve for x
    x = 16,579,332,990.54/135,010.80
  6. Step 6: Final answer
    x = 122,800.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.