Home / 111,731.28-154,202.01-66,408.81

Finding the Fourth Proportional to 111,731.28, 154,202.01 and 66,408.81

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Solution

The fourth proportional to 111,731.28, 154,202.01 and 66,408.81 is: 91,651.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,731.28 : 154,202.01 = 66,408.81 : x
  2. Step 2: Convert to fraction form
    111,731.28/154,202.01 = 66,408.81/x
  3. Step 3: Cross multiply
    111,731.28x = 154,202.01 × 66,408.81
  4. Step 4: Simplify right side
    111,731.28x = 10,240,372,397.35
  5. Step 5: Solve for x
    x = 10,240,372,397.35/111,731.28
  6. Step 6: Final answer
    x = 91,651.79

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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.