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Finding the Fourth Proportional to 170,144.42, 255,374.51 and 85,963.70

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Solution

The fourth proportional to 170,144.42, 255,374.51 and 85,963.70 is: 129,025.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,144.42 : 255,374.51 = 85,963.70 : x
  2. Step 2: Convert to fraction form
    170,144.42/255,374.51 = 85,963.70/x
  3. Step 3: Cross multiply
    170,144.42x = 255,374.51 × 85,963.70
  4. Step 4: Simplify right side
    170,144.42x = 21,952,937,973.90
  5. Step 5: Solve for x
    x = 21,952,937,973.90/170,144.42
  6. Step 6: Final answer
    x = 129,025.32

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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.