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Finding the Fourth Proportional to 159,439.40, 220,027.86 and 87,819.68

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Solution

The fourth proportional to 159,439.40, 220,027.86 and 87,819.68 is: 121,191.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,439.40 : 220,027.86 = 87,819.68 : x
  2. Step 2: Convert to fraction form
    159,439.40/220,027.86 = 87,819.68/x
  3. Step 3: Cross multiply
    159,439.40x = 220,027.86 × 87,819.68
  4. Step 4: Simplify right side
    159,439.40x = 19,322,776,256.28
  5. Step 5: Solve for x
    x = 19,322,776,256.28/159,439.40
  6. Step 6: Final answer
    x = 121,191.98

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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.