Home / 159,389.76-219,811.20-104,918.72

Finding the Fourth Proportional to 159,389.76, 219,811.20 and 104,918.72

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Solution

The fourth proportional to 159,389.76, 219,811.20 and 104,918.72 is: 144,691.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,389.76 : 219,811.20 = 104,918.72 : x
  2. Step 2: Convert to fraction form
    159,389.76/219,811.20 = 104,918.72/x
  3. Step 3: Cross multiply
    159,389.76x = 219,811.20 × 104,918.72
  4. Step 4: Simplify right side
    159,389.76x = 23,062,309,745.66
  5. Step 5: Solve for x
    x = 23,062,309,745.66/159,389.76
  6. Step 6: Final answer
    x = 144,691.29

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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.