Home / 135,556.34-187,022.94-81,820.94

Finding the Fourth Proportional to 135,556.34, 187,022.94 and 81,820.94

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Solution

The fourth proportional to 135,556.34, 187,022.94 and 81,820.94 is: 112,885.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,556.34 : 187,022.94 = 81,820.94 : x
  2. Step 2: Convert to fraction form
    135,556.34/187,022.94 = 81,820.94/x
  3. Step 3: Cross multiply
    135,556.34x = 187,022.94 × 81,820.94
  4. Step 4: Simplify right side
    135,556.34x = 15,302,392,752.36
  5. Step 5: Solve for x
    x = 15,302,392,752.36/135,556.34
  6. Step 6: Final answer
    x = 112,885.85

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1.5x scale

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.