Home / 91,860.24-137,672.91-79,965.39

Finding the Fourth Proportional to 91,860.24, 137,672.91 and 79,965.39

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Solution

The fourth proportional to 91,860.24, 137,672.91 and 79,965.39 is: 119,845.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,860.24 : 137,672.91 = 79,965.39 : x
  2. Step 2: Convert to fraction form
    91,860.24/137,672.91 = 79,965.39/x
  3. Step 3: Cross multiply
    91,860.24x = 137,672.91 × 79,965.39
  4. Step 4: Simplify right side
    91,860.24x = 11,009,067,940.58
  5. Step 5: Solve for x
    x = 11,009,067,940.58/91,860.24
  6. Step 6: Final answer
    x = 119,845.84

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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.