Home / 112,252.38-168,739.43-90,309.48

Finding the Fourth Proportional to 112,252.38, 168,739.43 and 90,309.48

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Solution

The fourth proportional to 112,252.38, 168,739.43 and 90,309.48 is: 135,754.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,252.38 : 168,739.43 = 90,309.48 : x
  2. Step 2: Convert to fraction form
    112,252.38/168,739.43 = 90,309.48/x
  3. Step 3: Cross multiply
    112,252.38x = 168,739.43 × 90,309.48
  4. Step 4: Simplify right side
    112,252.38x = 15,238,769,727.25
  5. Step 5: Solve for x
    x = 15,238,769,727.25/112,252.38
  6. Step 6: Final answer
    x = 135,754.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.