Home / 98,121.43-135,403.81-55,677.43

Finding the Fourth Proportional to 98,121.43, 135,403.81 and 55,677.43

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Solution

The fourth proportional to 98,121.43, 135,403.81 and 55,677.43 is: 76,832.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,121.43 : 135,403.81 = 55,677.43 : x
  2. Step 2: Convert to fraction form
    98,121.43/135,403.81 = 55,677.43/x
  3. Step 3: Cross multiply
    98,121.43x = 135,403.81 × 55,677.43
  4. Step 4: Simplify right side
    98,121.43x = 7,538,936,153.01
  5. Step 5: Solve for x
    x = 7,538,936,153.01/98,121.43
  6. Step 6: Final answer
    x = 76,832.72

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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.