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Finding the Fourth Proportional to 159,589.86, 220,234.59 and 86,992.38

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Solution

The fourth proportional to 159,589.86, 220,234.59 and 86,992.38 is: 120,049.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,589.86 : 220,234.59 = 86,992.38 : x
  2. Step 2: Convert to fraction form
    159,589.86/220,234.59 = 86,992.38/x
  3. Step 3: Cross multiply
    159,589.86x = 220,234.59 × 86,992.38
  4. Step 4: Simplify right side
    159,589.86x = 19,158,731,142.42
  5. Step 5: Solve for x
    x = 19,158,731,142.42/159,589.86
  6. Step 6: Final answer
    x = 120,049.80

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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.