Home / 100,849.95-139,167.76-55,519.19

Finding the Fourth Proportional to 100,849.95, 139,167.76 and 55,519.19

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Solution

The fourth proportional to 100,849.95, 139,167.76 and 55,519.19 is: 76,613.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,849.95 : 139,167.76 = 55,519.19 : x
  2. Step 2: Convert to fraction form
    100,849.95/139,167.76 = 55,519.19/x
  3. Step 3: Cross multiply
    100,849.95x = 139,167.76 × 55,519.19
  4. Step 4: Simplify right side
    100,849.95x = 7,726,481,309.31
  5. Step 5: Solve for x
    x = 7,726,481,309.31/100,849.95
  6. Step 6: Final answer
    x = 76,613.64

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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.