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Finding the Fourth Proportional to 170,144.30, 255,374.32 and 85,963.59

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Solution

The fourth proportional to 170,144.30, 255,374.32 and 85,963.59 is: 129,025.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,144.30 : 255,374.32 = 85,963.59 : x
  2. Step 2: Convert to fraction form
    170,144.30/255,374.32 = 85,963.59/x
  3. Step 3: Cross multiply
    170,144.30x = 255,374.32 × 85,963.59
  4. Step 4: Simplify right side
    170,144.30x = 21,952,893,341.01
  5. Step 5: Solve for x
    x = 21,952,893,341.01/170,144.30
  6. Step 6: Final answer
    x = 129,025.15

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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.