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Finding the Fourth Proportional to 170,628.57, 256,164.12 and 131,213.16

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Solution

The fourth proportional to 170,628.57, 256,164.12 and 131,213.16 is: 196,989.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,628.57 : 256,164.12 = 131,213.16 : x
  2. Step 2: Convert to fraction form
    170,628.57/256,164.12 = 131,213.16/x
  3. Step 3: Cross multiply
    170,628.57x = 256,164.12 × 131,213.16
  4. Step 4: Simplify right side
    170,628.57x = 33,612,103,663.82
  5. Step 5: Solve for x
    x = 33,612,103,663.82/170,628.57
  6. Step 6: Final answer
    x = 196,989.89

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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.