Home / 98,219.55-135,543.94-55,778.39

Finding the Fourth Proportional to 98,219.55, 135,543.94 and 55,778.39

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Solution

The fourth proportional to 98,219.55, 135,543.94 and 55,778.39 is: 76,974.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,219.55 : 135,543.94 = 55,778.39 : x
  2. Step 2: Convert to fraction form
    98,219.55/135,543.94 = 55,778.39/x
  3. Step 3: Cross multiply
    98,219.55x = 135,543.94 × 55,778.39
  4. Step 4: Simplify right side
    98,219.55x = 7,560,422,438.58
  5. Step 5: Solve for x
    x = 7,560,422,438.58/98,219.55
  6. Step 6: Final answer
    x = 76,974.72

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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.