Home / 135,773.68-187,376.56-78,415.44

Finding the Fourth Proportional to 135,773.68, 187,376.56 and 78,415.44

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Solution

The fourth proportional to 135,773.68, 187,376.56 and 78,415.44 is: 108,218.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,773.68 : 187,376.56 = 78,415.44 : x
  2. Step 2: Convert to fraction form
    135,773.68/187,376.56 = 78,415.44/x
  3. Step 3: Cross multiply
    135,773.68x = 187,376.56 × 78,415.44
  4. Step 4: Simplify right side
    135,773.68x = 14,693,215,398.09
  5. Step 5: Solve for x
    x = 14,693,215,398.09/135,773.68
  6. Step 6: Final answer
    x = 108,218.44

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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.