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Finding the Fourth Proportional to 115,572.87, 159,383.82 and 88,716.51

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Solution

The fourth proportional to 115,572.87, 159,383.82 and 88,716.51 is: 122,346.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,572.87 : 159,383.82 = 88,716.51 : x
  2. Step 2: Convert to fraction form
    115,572.87/159,383.82 = 88,716.51/x
  3. Step 3: Cross multiply
    115,572.87x = 159,383.82 × 88,716.51
  4. Step 4: Simplify right side
    115,572.87x = 14,139,976,260.87
  5. Step 5: Solve for x
    x = 14,139,976,260.87/115,572.87
  6. Step 6: Final answer
    x = 122,346.85

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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.