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Finding the Fourth Proportional to 159,447.96, 220,035.56 and 87,834.68

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Solution

The fourth proportional to 159,447.96, 220,035.56 and 87,834.68 is: 121,210.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,447.96 : 220,035.56 = 87,834.68 : x
  2. Step 2: Convert to fraction form
    159,447.96/220,035.56 = 87,834.68/x
  3. Step 3: Cross multiply
    159,447.96x = 220,035.56 × 87,834.68
  4. Step 4: Simplify right side
    159,447.96x = 19,326,753,001.22
  5. Step 5: Solve for x
    x = 19,326,753,001.22/159,447.96
  6. Step 6: Final answer
    x = 121,210.41

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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.