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Finding the Fourth Proportional to 159,707.60, 239,359.80 and 80,843.60

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Solution

The fourth proportional to 159,707.60, 239,359.80 and 80,843.60 is: 121,163.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,707.60 : 239,359.80 = 80,843.60 : x
  2. Step 2: Convert to fraction form
    159,707.60/239,359.80 = 80,843.60/x
  3. Step 3: Cross multiply
    159,707.60x = 239,359.80 × 80,843.60
  4. Step 4: Simplify right side
    159,707.60x = 19,350,707,927.28
  5. Step 5: Solve for x
    x = 19,350,707,927.28/159,707.60
  6. Step 6: Final answer
    x = 121,163.35

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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.