Home / 205,331.80-308,040.90-86,942.20

Finding the Fourth Proportional to 205,331.80, 308,040.90 and 86,942.20

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Solution

The fourth proportional to 205,331.80, 308,040.90 and 86,942.20 is: 130,431.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,331.80 : 308,040.90 = 86,942.20 : x
  2. Step 2: Convert to fraction form
    205,331.80/308,040.90 = 86,942.20/x
  3. Step 3: Cross multiply
    205,331.80x = 308,040.90 × 86,942.20
  4. Step 4: Simplify right side
    205,331.80x = 26,781,753,535.98
  5. Step 5: Solve for x
    x = 26,781,753,535.98/205,331.80
  6. Step 6: Final answer
    x = 130,431.59

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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.