Home / 135,321.22-186,697.77-78,686.02

Finding the Fourth Proportional to 135,321.22, 186,697.77 and 78,686.02

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Solution

The fourth proportional to 135,321.22, 186,697.77 and 78,686.02 is: 108,560.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,321.22 : 186,697.77 = 78,686.02 : x
  2. Step 2: Convert to fraction form
    135,321.22/186,697.77 = 78,686.02/x
  3. Step 3: Cross multiply
    135,321.22x = 186,697.77 × 78,686.02
  4. Step 4: Simplify right side
    135,321.22x = 14,690,504,464.18
  5. Step 5: Solve for x
    x = 14,690,504,464.18/135,321.22
  6. Step 6: Final answer
    x = 108,560.24

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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.