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Finding the Fourth Proportional to 159,575.77, 220,211.91 and 87,962.44

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Solution

The fourth proportional to 159,575.77, 220,211.91 and 87,962.44 is: 121,386.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,575.77 : 220,211.91 = 87,962.44 : x
  2. Step 2: Convert to fraction form
    159,575.77/220,211.91 = 87,962.44/x
  3. Step 3: Cross multiply
    159,575.77x = 220,211.91 × 87,962.44
  4. Step 4: Simplify right side
    159,575.77x = 19,370,376,920.66
  5. Step 5: Solve for x
    x = 19,370,376,920.66/159,575.77
  6. Step 6: Final answer
    x = 121,386.71

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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.