Home / 135,025.12-186,308.70-81,313.60

Finding the Fourth Proportional to 135,025.12, 186,308.70 and 81,313.60

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Solution

The fourth proportional to 135,025.12, 186,308.70 and 81,313.60 is: 112,197.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,025.12 : 186,308.70 = 81,313.60 : x
  2. Step 2: Convert to fraction form
    135,025.12/186,308.70 = 81,313.60/x
  3. Step 3: Cross multiply
    135,025.12x = 186,308.70 × 81,313.60
  4. Step 4: Simplify right side
    135,025.12x = 15,149,431,108.32
  5. Step 5: Solve for x
    x = 15,149,431,108.32/135,025.12
  6. Step 6: Final answer
    x = 112,197.13

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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.