Home / 98,172.49-135,470.05-55,149.64

Finding the Fourth Proportional to 98,172.49, 135,470.05 and 55,149.64

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Solution

The fourth proportional to 98,172.49, 135,470.05 and 55,149.64 is: 76,102.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,172.49 : 135,470.05 = 55,149.64 : x
  2. Step 2: Convert to fraction form
    98,172.49/135,470.05 = 55,149.64/x
  3. Step 3: Cross multiply
    98,172.49x = 135,470.05 × 55,149.64
  4. Step 4: Simplify right side
    98,172.49x = 7,471,124,519.75
  5. Step 5: Solve for x
    x = 7,471,124,519.75/98,172.49
  6. Step 6: Final answer
    x = 76,102.02

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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.