Home / 159,057.10-219,493.24-87,436.61

Finding the Fourth Proportional to 159,057.10, 219,493.24 and 87,436.61

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Solution

The fourth proportional to 159,057.10, 219,493.24 and 87,436.61 is: 120,659.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,057.10 : 219,493.24 = 87,436.61 : x
  2. Step 2: Convert to fraction form
    159,057.10/219,493.24 = 87,436.61/x
  3. Step 3: Cross multiply
    159,057.10x = 219,493.24 × 87,436.61
  4. Step 4: Simplify right side
    159,057.10x = 19,191,744,823.52
  5. Step 5: Solve for x
    x = 19,191,744,823.52/159,057.10
  6. Step 6: Final answer
    x = 120,659.47

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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.