Home / 171,868.38-257,769.15-86,456.46

Finding the Fourth Proportional to 171,868.38, 257,769.15 and 86,456.46

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Solution

The fourth proportional to 171,868.38, 257,769.15 and 86,456.46 is: 129,667.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,868.38 : 257,769.15 = 86,456.46 : x
  2. Step 2: Convert to fraction form
    171,868.38/257,769.15 = 86,456.46/x
  3. Step 3: Cross multiply
    171,868.38x = 257,769.15 × 86,456.46
  4. Step 4: Simplify right side
    171,868.38x = 22,285,808,206.21
  5. Step 5: Solve for x
    x = 22,285,808,206.21/171,868.38
  6. Step 6: Final answer
    x = 129,667.88

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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.