Home / 100,984.83-139,360.04-55,664.56

Finding the Fourth Proportional to 100,984.83, 139,360.04 and 55,664.56

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Solution

The fourth proportional to 100,984.83, 139,360.04 and 55,664.56 is: 76,817.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,984.83 : 139,360.04 = 55,664.56 : x
  2. Step 2: Convert to fraction form
    100,984.83/139,360.04 = 55,664.56/x
  3. Step 3: Cross multiply
    100,984.83x = 139,360.04 × 55,664.56
  4. Step 4: Simplify right side
    100,984.83x = 7,757,415,308.18
  5. Step 5: Solve for x
    x = 7,757,415,308.18/100,984.83
  6. Step 6: Final answer
    x = 76,817.63

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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.