Home / 136,471.14-188,330.56-79,121.60

Finding the Fourth Proportional to 136,471.14, 188,330.56 and 79,121.60

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Solution

The fourth proportional to 136,471.14, 188,330.56 and 79,121.60 is: 109,188.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,471.14 : 188,330.56 = 79,121.60 : x
  2. Step 2: Convert to fraction form
    136,471.14/188,330.56 = 79,121.60/x
  3. Step 3: Cross multiply
    136,471.14x = 188,330.56 × 79,121.60
  4. Step 4: Simplify right side
    136,471.14x = 14,901,015,236.10
  5. Step 5: Solve for x
    x = 14,901,015,236.10/136,471.14
  6. Step 6: Final answer
    x = 109,188.03

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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.