Home / 138,465.82-208,132.26-91,383.48

Finding the Fourth Proportional to 138,465.82, 208,132.26 and 91,383.48

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Solution

The fourth proportional to 138,465.82, 208,132.26 and 91,383.48 is: 137,361.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,465.82 : 208,132.26 = 91,383.48 : x
  2. Step 2: Convert to fraction form
    138,465.82/208,132.26 = 91,383.48/x
  3. Step 3: Cross multiply
    138,465.82x = 208,132.26 × 91,383.48
  4. Step 4: Simplify right side
    138,465.82x = 19,019,850,219.06
  5. Step 5: Solve for x
    x = 19,019,850,219.06/138,465.82
  6. Step 6: Final answer
    x = 137,361.34

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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.