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Finding the Fourth Proportional to 159,917.29, 220,689.29 and 88,301.81

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Solution

The fourth proportional to 159,917.29, 220,689.29 and 88,301.81 is: 121,858.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,917.29 : 220,689.29 = 88,301.81 : x
  2. Step 2: Convert to fraction form
    159,917.29/220,689.29 = 88,301.81/x
  3. Step 3: Cross multiply
    159,917.29x = 220,689.29 × 88,301.81
  4. Step 4: Simplify right side
    159,917.29x = 19,487,263,754.61
  5. Step 5: Solve for x
    x = 19,487,263,754.61/159,917.29
  6. Step 6: Final answer
    x = 121,858.39

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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.