Home / 159,215.76-219,719.52-91,231.36

Finding the Fourth Proportional to 159,215.76, 219,719.52 and 91,231.36

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Solution

The fourth proportional to 159,215.76, 219,719.52 and 91,231.36 is: 125,900.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,215.76 : 219,719.52 = 91,231.36 : x
  2. Step 2: Convert to fraction form
    159,215.76/219,719.52 = 91,231.36/x
  3. Step 3: Cross multiply
    159,215.76x = 219,719.52 × 91,231.36
  4. Step 4: Simplify right side
    159,215.76x = 20,045,310,628.15
  5. Step 5: Solve for x
    x = 20,045,310,628.15/159,215.76
  6. Step 6: Final answer
    x = 125,900.29

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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.