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Finding the Fourth Proportional to 159,554.71, 220,181.18 and 87,934.71

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Solution

The fourth proportional to 159,554.71, 220,181.18 and 87,934.71 is: 121,347.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,554.71 : 220,181.18 = 87,934.71 : x
  2. Step 2: Convert to fraction form
    159,554.71/220,181.18 = 87,934.71/x
  3. Step 3: Cross multiply
    159,554.71x = 220,181.18 × 87,934.71
  4. Step 4: Simplify right side
    159,554.71x = 19,361,567,771.08
  5. Step 5: Solve for x
    x = 19,361,567,771.08/159,554.71
  6. Step 6: Final answer
    x = 121,347.52

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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.