Home / 98,378.76-135,761.07-55,936.38

Finding the Fourth Proportional to 98,378.76, 135,761.07 and 55,936.38

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Solution

The fourth proportional to 98,378.76, 135,761.07 and 55,936.38 is: 77,191.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,378.76 : 135,761.07 = 55,936.38 : x
  2. Step 2: Convert to fraction form
    98,378.76/135,761.07 = 55,936.38/x
  3. Step 3: Cross multiply
    98,378.76x = 135,761.07 × 55,936.38
  4. Step 4: Simplify right side
    98,378.76x = 7,593,982,800.73
  5. Step 5: Solve for x
    x = 7,593,982,800.73/98,378.76
  6. Step 6: Final answer
    x = 77,191.28

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1.5x scale

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.