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Finding the Fourth Proportional to 170,963.40, 256,445.10 and 161,121.90

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Solution

The fourth proportional to 170,963.40, 256,445.10 and 161,121.90 is: 241,682.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,963.40 : 256,445.10 = 161,121.90 : x
  2. Step 2: Convert to fraction form
    170,963.40/256,445.10 = 161,121.90/x
  3. Step 3: Cross multiply
    170,963.40x = 256,445.10 × 161,121.90
  4. Step 4: Simplify right side
    170,963.40x = 41,318,921,757.69
  5. Step 5: Solve for x
    x = 41,318,921,757.69/170,963.40
  6. Step 6: Final answer
    x = 241,682.85

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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.