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Finding the Fourth Proportional to 159,554.34, 220,180.65 and 87,934.34

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Solution

The fourth proportional to 159,554.34, 220,180.65 and 87,934.34 is: 121,346.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,554.34 : 220,180.65 = 87,934.34 : x
  2. Step 2: Convert to fraction form
    159,554.34/220,180.65 = 87,934.34/x
  3. Step 3: Cross multiply
    159,554.34x = 220,180.65 × 87,934.34
  4. Step 4: Simplify right side
    159,554.34x = 19,361,439,037.62
  5. Step 5: Solve for x
    x = 19,361,439,037.62/159,554.34
  6. Step 6: Final answer
    x = 121,346.99

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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.