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Finding the Fourth Proportional to 160,879.88, 221,868.78 and 100,456.04

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Solution

The fourth proportional to 160,879.88, 221,868.78 and 100,456.04 is: 138,538.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,879.88 : 221,868.78 = 100,456.04 : x
  2. Step 2: Convert to fraction form
    160,879.88/221,868.78 = 100,456.04/x
  3. Step 3: Cross multiply
    160,879.88x = 221,868.78 × 100,456.04
  4. Step 4: Simplify right side
    160,879.88x = 22,288,059,038.43
  5. Step 5: Solve for x
    x = 22,288,059,038.43/160,879.88
  6. Step 6: Final answer
    x = 138,538.51

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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.