Home / 154,997.28-213,849.12-91,311.84

Finding the Fourth Proportional to 154,997.28, 213,849.12 and 91,311.84

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Solution

The fourth proportional to 154,997.28, 213,849.12 and 91,311.84 is: 125,982.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,997.28 : 213,849.12 = 91,311.84 : x
  2. Step 2: Convert to fraction form
    154,997.28/213,849.12 = 91,311.84/x
  3. Step 3: Cross multiply
    154,997.28x = 213,849.12 × 91,311.84
  4. Step 4: Simplify right side
    154,997.28x = 19,526,956,629.58
  5. Step 5: Solve for x
    x = 19,526,956,629.58/154,997.28
  6. Step 6: Final answer
    x = 125,982.58

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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.