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Finding the Fourth Proportional to 136,882.54, 188,986.80 and 122,517.46

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Solution

The fourth proportional to 136,882.54, 188,986.80 and 122,517.46 is: 169,153.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,882.54 : 188,986.80 = 122,517.46 : x
  2. Step 2: Convert to fraction form
    136,882.54/188,986.80 = 122,517.46/x
  3. Step 3: Cross multiply
    136,882.54x = 188,986.80 × 122,517.46
  4. Step 4: Simplify right side
    136,882.54x = 23,154,182,709.53
  5. Step 5: Solve for x
    x = 23,154,182,709.53/136,882.54
  6. Step 6: Final answer
    x = 169,153.66

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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.