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Finding the Fourth Proportional to 159,496.80, 239,245.20 and 129,972.30

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Solution

The fourth proportional to 159,496.80, 239,245.20 and 129,972.30 is: 194,958.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,496.80 : 239,245.20 = 129,972.30 : x
  2. Step 2: Convert to fraction form
    159,496.80/239,245.20 = 129,972.30/x
  3. Step 3: Cross multiply
    159,496.80x = 239,245.20 × 129,972.30
  4. Step 4: Simplify right side
    159,496.80x = 31,095,248,907.96
  5. Step 5: Solve for x
    x = 31,095,248,907.96/159,496.80
  6. Step 6: Final answer
    x = 194,958.45

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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.