Home / 135,981.18-187,625.16-79,367.04

Finding the Fourth Proportional to 135,981.18, 187,625.16 and 79,367.04

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Solution

The fourth proportional to 135,981.18, 187,625.16 and 79,367.04 is: 109,509.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,981.18 : 187,625.16 = 79,367.04 : x
  2. Step 2: Convert to fraction form
    135,981.18/187,625.16 = 79,367.04/x
  3. Step 3: Cross multiply
    135,981.18x = 187,625.16 × 79,367.04
  4. Step 4: Simplify right side
    135,981.18x = 14,891,253,578.73
  5. Step 5: Solve for x
    x = 14,891,253,578.73/135,981.18
  6. Step 6: Final answer
    x = 109,509.67

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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.