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Finding the Fourth Proportional to 135,995.73, 187,613.73 and 90,629.52

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Solution

The fourth proportional to 135,995.73, 187,613.73 and 90,629.52 is: 125,028.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,995.73 : 187,613.73 = 90,629.52 : x
  2. Step 2: Convert to fraction form
    135,995.73/187,613.73 = 90,629.52/x
  3. Step 3: Cross multiply
    135,995.73x = 187,613.73 × 90,629.52
  4. Step 4: Simplify right side
    135,995.73x = 17,003,342,295.31
  5. Step 5: Solve for x
    x = 17,003,342,295.31/135,995.73
  6. Step 6: Final answer
    x = 125,028.50

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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.