Home / 98,731.39-136,249.34-55,720.05

Finding the Fourth Proportional to 98,731.39, 136,249.34 and 55,720.05

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Solution

The fourth proportional to 98,731.39, 136,249.34 and 55,720.05 is: 76,893.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,731.39 : 136,249.34 = 55,720.05 : x
  2. Step 2: Convert to fraction form
    98,731.39/136,249.34 = 55,720.05/x
  3. Step 3: Cross multiply
    98,731.39x = 136,249.34 × 55,720.05
  4. Step 4: Simplify right side
    98,731.39x = 7,591,820,327.56
  5. Step 5: Solve for x
    x = 7,591,820,327.56/98,731.39
  6. Step 6: Final answer
    x = 76,893.68

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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.