Home / 139,301.28-208,833.87-55,120.84

Finding the Fourth Proportional to 139,301.28, 208,833.87 and 55,120.84

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Solution

The fourth proportional to 139,301.28, 208,833.87 and 55,120.84 is: 82,634.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,301.28 : 208,833.87 = 55,120.84 : x
  2. Step 2: Convert to fraction form
    139,301.28/208,833.87 = 55,120.84/x
  3. Step 3: Cross multiply
    139,301.28x = 208,833.87 × 55,120.84
  4. Step 4: Simplify right side
    139,301.28x = 11,511,098,019.47
  5. Step 5: Solve for x
    x = 11,511,098,019.47/139,301.28
  6. Step 6: Final answer
    x = 82,634.55

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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.