Home / 170,713.56-256,402.31-139,146.78

Finding the Fourth Proportional to 170,713.56, 256,402.31 and 139,146.78

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Solution

The fourth proportional to 170,713.56, 256,402.31 and 139,146.78 is: 208,990.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,713.56 : 256,402.31 = 139,146.78 : x
  2. Step 2: Convert to fraction form
    170,713.56/256,402.31 = 139,146.78/x
  3. Step 3: Cross multiply
    170,713.56x = 256,402.31 × 139,146.78
  4. Step 4: Simplify right side
    170,713.56x = 35,677,555,125.33
  5. Step 5: Solve for x
    x = 35,677,555,125.33/170,713.56
  6. Step 6: Final answer
    x = 208,990.75

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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.