Home / 100,972.14-139,340.82-55,650.14

Finding the Fourth Proportional to 100,972.14, 139,340.82 and 55,650.14

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Solution

The fourth proportional to 100,972.14, 139,340.82 and 55,650.14 is: 76,796.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,972.14 : 139,340.82 = 55,650.14 : x
  2. Step 2: Convert to fraction form
    100,972.14/139,340.82 = 55,650.14/x
  3. Step 3: Cross multiply
    100,972.14x = 139,340.82 × 55,650.14
  4. Step 4: Simplify right side
    100,972.14x = 7,754,336,140.71
  5. Step 5: Solve for x
    x = 7,754,336,140.71/100,972.14
  6. Step 6: Final answer
    x = 76,796.79

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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.