Home / 100,860.88-139,191.36-55,542.22

Finding the Fourth Proportional to 100,860.88, 139,191.36 and 55,542.22

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Solution

The fourth proportional to 100,860.88, 139,191.36 and 55,542.22 is: 76,650.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,860.88 : 139,191.36 = 55,542.22 : x
  2. Step 2: Convert to fraction form
    100,860.88/139,191.36 = 55,542.22/x
  3. Step 3: Cross multiply
    100,860.88x = 139,191.36 × 55,542.22
  4. Step 4: Simplify right side
    100,860.88x = 7,730,997,139.22
  5. Step 5: Solve for x
    x = 7,730,997,139.22/100,860.88
  6. Step 6: Final answer
    x = 76,650.11

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1.5x scale

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.