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Finding the Fourth Proportional to 159,390.01, 219,958.19 and 87,769.86

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Solution

The fourth proportional to 159,390.01, 219,958.19 and 87,769.86 is: 121,122.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,390.01 : 219,958.19 = 87,769.86 : x
  2. Step 2: Convert to fraction form
    159,390.01/219,958.19 = 87,769.86/x
  3. Step 3: Cross multiply
    159,390.01x = 219,958.19 × 87,769.86
  4. Step 4: Simplify right side
    159,390.01x = 19,305,699,211.68
  5. Step 5: Solve for x
    x = 19,305,699,211.68/159,390.01
  6. Step 6: Final answer
    x = 121,122.39

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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.