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Finding the Fourth Proportional to 159,544.32, 220,175.78 and 87,928.96

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Solution

The fourth proportional to 159,544.32, 220,175.78 and 87,928.96 is: 121,344.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,544.32 : 220,175.78 = 87,928.96 : x
  2. Step 2: Convert to fraction form
    159,544.32/220,175.78 = 87,928.96/x
  3. Step 3: Cross multiply
    159,544.32x = 220,175.78 × 87,928.96
  4. Step 4: Simplify right side
    159,544.32x = 19,359,827,352.59
  5. Step 5: Solve for x
    x = 19,359,827,352.59/159,544.32
  6. Step 6: Final answer
    x = 121,344.51

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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.