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Finding the Fourth Proportional to 136,777.41, 188,784.31 and 80,207.01

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Solution

The fourth proportional to 136,777.41, 188,784.31 and 80,207.01 is: 110,704.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,777.41 : 188,784.31 = 80,207.01 : x
  2. Step 2: Convert to fraction form
    136,777.41/188,784.31 = 80,207.01/x
  3. Step 3: Cross multiply
    136,777.41x = 188,784.31 × 80,207.01
  4. Step 4: Simplify right side
    136,777.41x = 15,141,825,040.01
  5. Step 5: Solve for x
    x = 15,141,825,040.01/136,777.41
  6. Step 6: Final answer
    x = 110,704.14

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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.