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Finding the Fourth Proportional to 115,858.82, 159,758.73 and 100,616.95

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Solution

The fourth proportional to 115,858.82, 159,758.73 and 100,616.95 is: 138,741.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,858.82 : 159,758.73 = 100,616.95 : x
  2. Step 2: Convert to fraction form
    115,858.82/159,758.73 = 100,616.95/x
  3. Step 3: Cross multiply
    115,858.82x = 159,758.73 × 100,616.95
  4. Step 4: Simplify right side
    115,858.82x = 16,074,436,348.17
  5. Step 5: Solve for x
    x = 16,074,436,348.17/115,858.82
  6. Step 6: Final answer
    x = 138,741.58

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1.5x scale

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.