Home / 135,406.21-186,847.56-80,947.62

Finding the Fourth Proportional to 135,406.21, 186,847.56 and 80,947.62

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Solution

The fourth proportional to 135,406.21, 186,847.56 and 80,947.62 is: 111,699.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,406.21 : 186,847.56 = 80,947.62 : x
  2. Step 2: Convert to fraction form
    135,406.21/186,847.56 = 80,947.62/x
  3. Step 3: Cross multiply
    135,406.21x = 186,847.56 × 80,947.62
  4. Step 4: Simplify right side
    135,406.21x = 15,124,864,350.57
  5. Step 5: Solve for x
    x = 15,124,864,350.57/135,406.21
  6. Step 6: Final answer
    x = 111,699.93

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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.