Home / 135,976.73-187,644.60-79,388.10

Finding the Fourth Proportional to 135,976.73, 187,644.60 and 79,388.10

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Solution

The fourth proportional to 135,976.73, 187,644.60 and 79,388.10 is: 109,553.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,976.73 : 187,644.60 = 79,388.10 : x
  2. Step 2: Convert to fraction form
    135,976.73/187,644.60 = 79,388.10/x
  3. Step 3: Cross multiply
    135,976.73x = 187,644.60 × 79,388.10
  4. Step 4: Simplify right side
    135,976.73x = 14,896,748,269.26
  5. Step 5: Solve for x
    x = 14,896,748,269.26/135,976.73
  6. Step 6: Final answer
    x = 109,553.66

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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.