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Finding the Fourth Proportional to 159,651.96, 220,298.94 and 91,671.90

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Solution

The fourth proportional to 159,651.96, 220,298.94 and 91,671.90 is: 126,495.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,651.96 : 220,298.94 = 91,671.90 : x
  2. Step 2: Convert to fraction form
    159,651.96/220,298.94 = 91,671.90/x
  3. Step 3: Cross multiply
    159,651.96x = 220,298.94 × 91,671.90
  4. Step 4: Simplify right side
    159,651.96x = 20,195,222,397.79
  5. Step 5: Solve for x
    x = 20,195,222,397.79/159,651.96
  6. Step 6: Final answer
    x = 126,495.30

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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.