Home / 159,639.30-220,301.41-87,046.09

Finding the Fourth Proportional to 159,639.30, 220,301.41 and 87,046.09

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Solution

The fourth proportional to 159,639.30, 220,301.41 and 87,046.09 is: 120,123.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,639.30 : 220,301.41 = 87,046.09 : x
  2. Step 2: Convert to fraction form
    159,639.30/220,301.41 = 87,046.09/x
  3. Step 3: Cross multiply
    159,639.30x = 220,301.41 × 87,046.09
  4. Step 4: Simplify right side
    159,639.30x = 19,176,376,361.99
  5. Step 5: Solve for x
    x = 19,176,376,361.99/159,639.30
  6. Step 6: Final answer
    x = 120,123.15

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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.