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Finding the Fourth Proportional to 115,712.37, 159,629.81 and 79,952.49

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Solution

The fourth proportional to 115,712.37, 159,629.81 and 79,952.49 is: 110,297.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,712.37 : 159,629.81 = 79,952.49 : x
  2. Step 2: Convert to fraction form
    115,712.37/159,629.81 = 79,952.49/x
  3. Step 3: Cross multiply
    115,712.37x = 159,629.81 × 79,952.49
  4. Step 4: Simplify right side
    115,712.37x = 12,762,800,387.96
  5. Step 5: Solve for x
    x = 12,762,800,387.96/115,712.37
  6. Step 6: Final answer
    x = 110,297.63

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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.