Home / 159,902.03-220,665.45-87,305.15

Finding the Fourth Proportional to 159,902.03, 220,665.45 and 87,305.15

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Solution

The fourth proportional to 159,902.03, 220,665.45 and 87,305.15 is: 120,481.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,902.03 : 220,665.45 = 87,305.15 : x
  2. Step 2: Convert to fraction form
    159,902.03/220,665.45 = 87,305.15/x
  3. Step 3: Cross multiply
    159,902.03x = 220,665.45 × 87,305.15
  4. Step 4: Simplify right side
    159,902.03x = 19,265,228,672.21
  5. Step 5: Solve for x
    x = 19,265,228,672.21/159,902.03
  6. Step 6: Final answer
    x = 120,481.46

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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.