Home / 136,212.18-188,065.42-85,245.56

Finding the Fourth Proportional to 136,212.18, 188,065.42 and 85,245.56

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Solution

The fourth proportional to 136,212.18, 188,065.42 and 85,245.56 is: 117,696.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,212.18 : 188,065.42 = 85,245.56 : x
  2. Step 2: Convert to fraction form
    136,212.18/188,065.42 = 85,245.56/x
  3. Step 3: Cross multiply
    136,212.18x = 188,065.42 × 85,245.56
  4. Step 4: Simplify right side
    136,212.18x = 16,031,742,044.54
  5. Step 5: Solve for x
    x = 16,031,742,044.54/136,212.18
  6. Step 6: Final answer
    x = 117,696.83

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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.