Home / 115,913.82-159,936.48-68,149.74

Finding the Fourth Proportional to 115,913.82, 159,936.48 and 68,149.74

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Solution

The fourth proportional to 115,913.82, 159,936.48 and 68,149.74 is: 94,032.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,913.82 : 159,936.48 = 68,149.74 : x
  2. Step 2: Convert to fraction form
    115,913.82/159,936.48 = 68,149.74/x
  3. Step 3: Cross multiply
    115,913.82x = 159,936.48 × 68,149.74
  4. Step 4: Simplify right side
    115,913.82x = 10,899,629,528.52
  5. Step 5: Solve for x
    x = 10,899,629,528.52/115,913.82
  6. Step 6: Final answer
    x = 94,032.18

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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.