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Finding the Fourth Proportional to 170,874.30, 256,311.45 and 121,010.70

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Solution

The fourth proportional to 170,874.30, 256,311.45 and 121,010.70 is: 181,516.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,874.30 : 256,311.45 = 121,010.70 : x
  2. Step 2: Convert to fraction form
    170,874.30/256,311.45 = 121,010.70/x
  3. Step 3: Cross multiply
    170,874.30x = 256,311.45 × 121,010.70
  4. Step 4: Simplify right side
    170,874.30x = 31,016,427,982.52
  5. Step 5: Solve for x
    x = 31,016,427,982.52/170,874.30
  6. Step 6: Final answer
    x = 181,516.05

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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.