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Finding the Fourth Proportional to 159,590.32, 220,234.58 and 87,971.54

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Solution

The fourth proportional to 159,590.32, 220,234.58 and 87,971.54 is: 121,400.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,590.32 : 220,234.58 = 87,971.54 : x
  2. Step 2: Convert to fraction form
    159,590.32/220,234.58 = 87,971.54/x
  3. Step 3: Cross multiply
    159,590.32x = 220,234.58 × 87,971.54
  4. Step 4: Simplify right side
    159,590.32x = 19,374,375,163.85
  5. Step 5: Solve for x
    x = 19,374,375,163.85/159,590.32
  6. Step 6: Final answer
    x = 121,400.69

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1.5x scale

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.