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Finding the Fourth Proportional to 161,717.20, 243,013.20 and 142,471.60

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Solution

The fourth proportional to 161,717.20, 243,013.20 and 142,471.60 is: 214,092.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,717.20 : 243,013.20 = 142,471.60 : x
  2. Step 2: Convert to fraction form
    161,717.20/243,013.20 = 142,471.60/x
  3. Step 3: Cross multiply
    161,717.20x = 243,013.20 × 142,471.60
  4. Step 4: Simplify right side
    161,717.20x = 34,622,479,425.12
  5. Step 5: Solve for x
    x = 34,622,479,425.12/161,717.20
  6. Step 6: Final answer
    x = 214,092.75

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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.