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Finding the Fourth Proportional to 170,149.82, 255,382.60 and 85,969.12

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Solution

The fourth proportional to 170,149.82, 255,382.60 and 85,969.12 is: 129,033.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,149.82 : 255,382.60 = 85,969.12 : x
  2. Step 2: Convert to fraction form
    170,149.82/255,382.60 = 85,969.12/x
  3. Step 3: Cross multiply
    170,149.82x = 255,382.60 × 85,969.12
  4. Step 4: Simplify right side
    170,149.82x = 21,955,017,385.31
  5. Step 5: Solve for x
    x = 21,955,017,385.31/170,149.82
  6. Step 6: Final answer
    x = 129,033.44

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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.