Home / 170,819.38-256,385.30-86,637.65

Finding the Fourth Proportional to 170,819.38, 256,385.30 and 86,637.65

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Solution

The fourth proportional to 170,819.38, 256,385.30 and 86,637.65 is: 130,035.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,819.38 : 256,385.30 = 86,637.65 : x
  2. Step 2: Convert to fraction form
    170,819.38/256,385.30 = 86,637.65/x
  3. Step 3: Cross multiply
    170,819.38x = 256,385.30 × 86,637.65
  4. Step 4: Simplify right side
    170,819.38x = 22,212,620,100.93
  5. Step 5: Solve for x
    x = 22,212,620,100.93/170,819.38
  6. Step 6: Final answer
    x = 130,035.71

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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.