Home / 138,828.10-191,569.17-82,228.54

Finding the Fourth Proportional to 138,828.10, 191,569.17 and 82,228.54

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Solution

The fourth proportional to 138,828.10, 191,569.17 and 82,228.54 is: 113,467.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,828.10 : 191,569.17 = 82,228.54 : x
  2. Step 2: Convert to fraction form
    138,828.10/191,569.17 = 82,228.54/x
  3. Step 3: Cross multiply
    138,828.10x = 191,569.17 × 82,228.54
  4. Step 4: Simplify right side
    138,828.10x = 15,752,453,158.11
  5. Step 5: Solve for x
    x = 15,752,453,158.11/138,828.10
  6. Step 6: Final answer
    x = 113,467.33

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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.