Home / 135,919.66-187,593.56-78,551.06

Finding the Fourth Proportional to 135,919.66, 187,593.56 and 78,551.06

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Solution

The fourth proportional to 135,919.66, 187,593.56 and 78,551.06 is: 108,414.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,919.66 : 187,593.56 = 78,551.06 : x
  2. Step 2: Convert to fraction form
    135,919.66/187,593.56 = 78,551.06/x
  3. Step 3: Cross multiply
    135,919.66x = 187,593.56 × 78,551.06
  4. Step 4: Simplify right side
    135,919.66x = 14,735,672,987.17
  5. Step 5: Solve for x
    x = 14,735,672,987.17/135,919.66
  6. Step 6: Final answer
    x = 108,414.58

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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.