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Finding the Fourth Proportional to 159,287.40, 238,959.90 and 80,202.60

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Solution

The fourth proportional to 159,287.40, 238,959.90 and 80,202.60 is: 120,318.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,287.40 : 238,959.90 = 80,202.60 : x
  2. Step 2: Convert to fraction form
    159,287.40/238,959.90 = 80,202.60/x
  3. Step 3: Cross multiply
    159,287.40x = 238,959.90 × 80,202.60
  4. Step 4: Simplify right side
    159,287.40x = 19,165,205,275.74
  5. Step 5: Solve for x
    x = 19,165,205,275.74/159,287.40
  6. Step 6: Final answer
    x = 120,318.40

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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.