Home / 135,919.18-187,554.74-79,363.36

Finding the Fourth Proportional to 135,919.18, 187,554.74 and 79,363.36

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Solution

The fourth proportional to 135,919.18, 187,554.74 and 79,363.36 is: 109,513.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,919.18 : 187,554.74 = 79,363.36 : x
  2. Step 2: Convert to fraction form
    135,919.18/187,554.74 = 79,363.36/x
  3. Step 3: Cross multiply
    135,919.18x = 187,554.74 × 79,363.36
  4. Step 4: Simplify right side
    135,919.18x = 14,884,974,350.33
  5. Step 5: Solve for x
    x = 14,884,974,350.33/135,919.18
  6. Step 6: Final answer
    x = 109,513.42

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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.