Home / 100,877.23-139,211.63-55,556.11

Finding the Fourth Proportional to 100,877.23, 139,211.63 and 55,556.11

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Solution

The fourth proportional to 100,877.23, 139,211.63 and 55,556.11 is: 76,668.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,877.23 : 139,211.63 = 55,556.11 : x
  2. Step 2: Convert to fraction form
    100,877.23/139,211.63 = 55,556.11/x
  3. Step 3: Cross multiply
    100,877.23x = 139,211.63 × 55,556.11
  4. Step 4: Simplify right side
    100,877.23x = 7,734,056,629.56
  5. Step 5: Solve for x
    x = 7,734,056,629.56/100,877.23
  6. Step 6: Final answer
    x = 76,668.01

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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.