Home / 135,562.82-187,033.93-78,194.43

Finding the Fourth Proportional to 135,562.82, 187,033.93 and 78,194.43

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Solution

The fourth proportional to 135,562.82, 187,033.93 and 78,194.43 is: 107,883.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,562.82 : 187,033.93 = 78,194.43 : x
  2. Step 2: Convert to fraction form
    135,562.82/187,033.93 = 78,194.43/x
  3. Step 3: Cross multiply
    135,562.82x = 187,033.93 × 78,194.43
  4. Step 4: Simplify right side
    135,562.82x = 14,625,011,351.52
  5. Step 5: Solve for x
    x = 14,625,011,351.52/135,562.82
  6. Step 6: Final answer
    x = 107,883.65

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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.