Home / 90,998.24-136,988.73-81,843.26

Finding the Fourth Proportional to 90,998.24, 136,988.73 and 81,843.26

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Solution

The fourth proportional to 90,998.24, 136,988.73 and 81,843.26 is: 123,206.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,998.24 : 136,988.73 = 81,843.26 : x
  2. Step 2: Convert to fraction form
    90,998.24/136,988.73 = 81,843.26/x
  3. Step 3: Cross multiply
    90,998.24x = 136,988.73 × 81,843.26
  4. Step 4: Simplify right side
    90,998.24x = 11,211,603,561.52
  5. Step 5: Solve for x
    x = 11,211,603,561.52/90,998.24
  6. Step 6: Final answer
    x = 123,206.82

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.