Home / 205,009.38-307,628.89-86,769.23

Finding the Fourth Proportional to 205,009.38, 307,628.89 and 86,769.23

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Solution

The fourth proportional to 205,009.38, 307,628.89 and 86,769.23 is: 130,202.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,009.38 : 307,628.89 = 86,769.23 : x
  2. Step 2: Convert to fraction form
    205,009.38/307,628.89 = 86,769.23/x
  3. Step 3: Cross multiply
    205,009.38x = 307,628.89 × 86,769.23
  4. Step 4: Simplify right side
    205,009.38x = 26,692,720,155.99
  5. Step 5: Solve for x
    x = 26,692,720,155.99/205,009.38
  6. Step 6: Final answer
    x = 130,202.43

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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.