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Finding the Fourth Proportional to 159,992.82, 220,790.85 and 87,396.72

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Solution

The fourth proportional to 159,992.82, 220,790.85 and 87,396.72 is: 120,607.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,992.82 : 220,790.85 = 87,396.72 : x
  2. Step 2: Convert to fraction form
    159,992.82/220,790.85 = 87,396.72/x
  3. Step 3: Cross multiply
    159,992.82x = 220,790.85 × 87,396.72
  4. Step 4: Simplify right side
    159,992.82x = 19,296,396,096.01
  5. Step 5: Solve for x
    x = 19,296,396,096.01/159,992.82
  6. Step 6: Final answer
    x = 120,607.89

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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.