Home / 100,999.17-139,378.82-55,677.92

Finding the Fourth Proportional to 100,999.17, 139,378.82 and 55,677.92

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Solution

The fourth proportional to 100,999.17, 139,378.82 and 55,677.92 is: 76,835.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,999.17 : 139,378.82 = 55,677.92 : x
  2. Step 2: Convert to fraction form
    100,999.17/139,378.82 = 55,677.92/x
  3. Step 3: Cross multiply
    100,999.17x = 139,378.82 × 55,677.92
  4. Step 4: Simplify right side
    100,999.17x = 7,760,322,511.26
  5. Step 5: Solve for x
    x = 7,760,322,511.26/100,999.17
  6. Step 6: Final answer
    x = 76,835.51

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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.