Home / 135,794.78-187,419.33-79,206.17

Finding the Fourth Proportional to 135,794.78, 187,419.33 and 79,206.17

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Solution

The fourth proportional to 135,794.78, 187,419.33 and 79,206.17 is: 109,317.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,794.78 : 187,419.33 = 79,206.17 : x
  2. Step 2: Convert to fraction form
    135,794.78/187,419.33 = 79,206.17/x
  3. Step 3: Cross multiply
    135,794.78x = 187,419.33 × 79,206.17
  4. Step 4: Simplify right side
    135,794.78x = 14,844,767,313.27
  5. Step 5: Solve for x
    x = 14,844,767,313.27/135,794.78
  6. Step 6: Final answer
    x = 109,317.66

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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.