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Finding the Fourth Proportional to 159,449.60, 220,037.76 and 87,836.32

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Solution

The fourth proportional to 159,449.60, 220,037.76 and 87,836.32 is: 121,212.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,449.60 : 220,037.76 = 87,836.32 : x
  2. Step 2: Convert to fraction form
    159,449.60/220,037.76 = 87,836.32/x
  3. Step 3: Cross multiply
    159,449.60x = 220,037.76 × 87,836.32
  4. Step 4: Simplify right side
    159,449.60x = 19,327,307,099.44
  5. Step 5: Solve for x
    x = 19,327,307,099.44/159,449.60
  6. Step 6: Final answer
    x = 121,212.64

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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.