Home / 135,869.61-203,847.47-105,986.31

Finding the Fourth Proportional to 135,869.61, 203,847.47 and 105,986.31

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Solution

The fourth proportional to 135,869.61, 203,847.47 and 105,986.31 is: 159,013.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,869.61 : 203,847.47 = 105,986.31 : x
  2. Step 2: Convert to fraction form
    135,869.61/203,847.47 = 105,986.31/x
  3. Step 3: Cross multiply
    135,869.61x = 203,847.47 × 105,986.31
  4. Step 4: Simplify right side
    135,869.61x = 21,605,040,251.22
  5. Step 5: Solve for x
    x = 21,605,040,251.22/135,869.61
  6. Step 6: Final answer
    x = 159,013.05

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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.