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Finding the Fourth Proportional to 100,862.88, 139,194.12 and 55,544.22

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Solution

The fourth proportional to 100,862.88, 139,194.12 and 55,544.22 is: 76,652.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,862.88 : 139,194.12 = 55,544.22 : x
  2. Step 2: Convert to fraction form
    100,862.88/139,194.12 = 55,544.22/x
  3. Step 3: Cross multiply
    100,862.88x = 139,194.12 × 55,544.22
  4. Step 4: Simplify right side
    100,862.88x = 7,731,428,823.99
  5. Step 5: Solve for x
    x = 7,731,428,823.99/100,862.88
  6. Step 6: Final answer
    x = 76,652.87

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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.