Home / 136,405.28-188,248.75-82,692.56

Finding the Fourth Proportional to 136,405.28, 188,248.75 and 82,692.56

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Solution

The fourth proportional to 136,405.28, 188,248.75 and 82,692.56 is: 114,121.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,405.28 : 188,248.75 = 82,692.56 : x
  2. Step 2: Convert to fraction form
    136,405.28/188,248.75 = 82,692.56/x
  3. Step 3: Cross multiply
    136,405.28x = 188,248.75 × 82,692.56
  4. Step 4: Simplify right side
    136,405.28x = 15,566,771,054.30
  5. Step 5: Solve for x
    x = 15,566,771,054.30/136,405.28
  6. Step 6: Final answer
    x = 114,121.47

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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.