Home / 135,909.90-187,556.94-79,310.34

Finding the Fourth Proportional to 135,909.90, 187,556.94 and 79,310.34

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Solution

The fourth proportional to 135,909.90, 187,556.94 and 79,310.34 is: 109,449.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,909.90 : 187,556.94 = 79,310.34 : x
  2. Step 2: Convert to fraction form
    135,909.90/187,556.94 = 79,310.34/x
  3. Step 3: Cross multiply
    135,909.90x = 187,556.94 × 79,310.34
  4. Step 4: Simplify right side
    135,909.90x = 14,875,204,680.76
  5. Step 5: Solve for x
    x = 14,875,204,680.76/135,909.90
  6. Step 6: Final answer
    x = 109,449.01

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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.