Home / 136,390.14-188,304.57-100,517.67

Finding the Fourth Proportional to 136,390.14, 188,304.57 and 100,517.67

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Solution

The fourth proportional to 136,390.14, 188,304.57 and 100,517.67 is: 138,777.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,390.14 : 188,304.57 = 100,517.67 : x
  2. Step 2: Convert to fraction form
    136,390.14/188,304.57 = 100,517.67/x
  3. Step 3: Cross multiply
    136,390.14x = 188,304.57 × 100,517.67
  4. Step 4: Simplify right side
    136,390.14x = 18,927,936,626.75
  5. Step 5: Solve for x
    x = 18,927,936,626.75/136,390.14
  6. Step 6: Final answer
    x = 138,777.90

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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.