Home / 135,399.50-186,857.73-81,683.37

Finding the Fourth Proportional to 135,399.50, 186,857.73 and 81,683.37

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Solution

The fourth proportional to 135,399.50, 186,857.73 and 81,683.37 is: 112,726.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,399.50 : 186,857.73 = 81,683.37 : x
  2. Step 2: Convert to fraction form
    135,399.50/186,857.73 = 81,683.37/x
  3. Step 3: Cross multiply
    135,399.50x = 186,857.73 × 81,683.37
  4. Step 4: Simplify right side
    135,399.50x = 15,263,168,162.66
  5. Step 5: Solve for x
    x = 15,263,168,162.66/135,399.50
  6. Step 6: Final answer
    x = 112,726.92

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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.