Home / 137,067.22-189,143.99-76,642.84

Finding the Fourth Proportional to 137,067.22, 189,143.99 and 76,642.84

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Solution

The fourth proportional to 137,067.22, 189,143.99 and 76,642.84 is: 105,762.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,067.22 : 189,143.99 = 76,642.84 : x
  2. Step 2: Convert to fraction form
    137,067.22/189,143.99 = 76,642.84/x
  3. Step 3: Cross multiply
    137,067.22x = 189,143.99 × 76,642.84
  4. Step 4: Simplify right side
    137,067.22x = 14,496,531,616.81
  5. Step 5: Solve for x
    x = 14,496,531,616.81/137,067.22
  6. Step 6: Final answer
    x = 105,762.21

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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.