Home / 136,965.39-189,012.24-83,240.37

Finding the Fourth Proportional to 136,965.39, 189,012.24 and 83,240.37

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Solution

The fourth proportional to 136,965.39, 189,012.24 and 83,240.37 is: 114,871.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,965.39 : 189,012.24 = 83,240.37 : x
  2. Step 2: Convert to fraction form
    136,965.39/189,012.24 = 83,240.37/x
  3. Step 3: Cross multiply
    136,965.39x = 189,012.24 × 83,240.37
  4. Step 4: Simplify right side
    136,965.39x = 15,733,448,792.13
  5. Step 5: Solve for x
    x = 15,733,448,792.13/136,965.39
  6. Step 6: Final answer
    x = 114,871.71

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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.