Home / 135,563.91-187,074.41-81,829.32

Finding the Fourth Proportional to 135,563.91, 187,074.41 and 81,829.32

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Solution

The fourth proportional to 135,563.91, 187,074.41 and 81,829.32 is: 112,922.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,563.91 : 187,074.41 = 81,829.32 : x
  2. Step 2: Convert to fraction form
    135,563.91/187,074.41 = 81,829.32/x
  3. Step 3: Cross multiply
    135,563.91x = 187,074.41 × 81,829.32
  4. Step 4: Simplify right side
    135,563.91x = 15,308,171,350.55
  5. Step 5: Solve for x
    x = 15,308,171,350.55/135,563.91
  6. Step 6: Final answer
    x = 112,922.17

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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.