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Finding the Fourth Proportional to 159,589.14, 220,230.30 and 86,992.80

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Solution

The fourth proportional to 159,589.14, 220,230.30 and 86,992.80 is: 120,048.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,589.14 : 220,230.30 = 86,992.80 : x
  2. Step 2: Convert to fraction form
    159,589.14/220,230.30 = 86,992.80/x
  3. Step 3: Cross multiply
    159,589.14x = 220,230.30 × 86,992.80
  4. Step 4: Simplify right side
    159,589.14x = 19,158,450,441.84
  5. Step 5: Solve for x
    x = 19,158,450,441.84/159,589.14
  6. Step 6: Final answer
    x = 120,048.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.