Home / 138,067.26-190,539.54-77,656.92

Finding the Fourth Proportional to 138,067.26, 190,539.54 and 77,656.92

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Solution

The fourth proportional to 138,067.26, 190,539.54 and 77,656.92 is: 107,170.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,067.26 : 190,539.54 = 77,656.92 : x
  2. Step 2: Convert to fraction form
    138,067.26/190,539.54 = 77,656.92/x
  3. Step 3: Cross multiply
    138,067.26x = 190,539.54 × 77,656.92
  4. Step 4: Simplify right side
    138,067.26x = 14,796,713,814.62
  5. Step 5: Solve for x
    x = 14,796,713,814.62/138,067.26
  6. Step 6: Final answer
    x = 107,170.33

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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.