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Finding the Fourth Proportional to 159,521.60, 239,080.80 and 80,657.60

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Solution

The fourth proportional to 159,521.60, 239,080.80 and 80,657.60 is: 120,884.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,521.60 : 239,080.80 = 80,657.60 : x
  2. Step 2: Convert to fraction form
    159,521.60/239,080.80 = 80,657.60/x
  3. Step 3: Cross multiply
    159,521.60x = 239,080.80 × 80,657.60
  4. Step 4: Simplify right side
    159,521.60x = 19,283,683,534.08
  5. Step 5: Solve for x
    x = 19,283,683,534.08/159,521.60
  6. Step 6: Final answer
    x = 120,884.47

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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.