Home / 159,128.34-219,594.24-87,508.56

Finding the Fourth Proportional to 159,128.34, 219,594.24 and 87,508.56

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Solution

The fourth proportional to 159,128.34, 219,594.24 and 87,508.56 is: 120,760.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,128.34 : 219,594.24 = 87,508.56 : x
  2. Step 2: Convert to fraction form
    159,128.34/219,594.24 = 87,508.56/x
  3. Step 3: Cross multiply
    159,128.34x = 219,594.24 × 87,508.56
  4. Step 4: Simplify right side
    159,128.34x = 19,216,375,726.69
  5. Step 5: Solve for x
    x = 19,216,375,726.69/159,128.34
  6. Step 6: Final answer
    x = 120,760.23

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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.