Home / 212,067.14-318,204.47-99,758.69

Finding the Fourth Proportional to 212,067.14, 318,204.47 and 99,758.69

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Solution

The fourth proportional to 212,067.14, 318,204.47 and 99,758.69 is: 149,686.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,067.14 : 318,204.47 = 99,758.69 : x
  2. Step 2: Convert to fraction form
    212,067.14/318,204.47 = 99,758.69/x
  3. Step 3: Cross multiply
    212,067.14x = 318,204.47 × 99,758.69
  4. Step 4: Simplify right side
    212,067.14x = 31,743,659,737.72
  5. Step 5: Solve for x
    x = 31,743,659,737.72/212,067.14
  6. Step 6: Final answer
    x = 149,686.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.