Home / 135,086.43-186,419.49-74,657.05

Finding the Fourth Proportional to 135,086.43, 186,419.49 and 74,657.05

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Solution

The fourth proportional to 135,086.43, 186,419.49 and 74,657.05 is: 103,026.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,086.43 : 186,419.49 = 74,657.05 : x
  2. Step 2: Convert to fraction form
    135,086.43/186,419.49 = 74,657.05/x
  3. Step 3: Cross multiply
    135,086.43x = 186,419.49 × 74,657.05
  4. Step 4: Simplify right side
    135,086.43x = 13,917,529,185.90
  5. Step 5: Solve for x
    x = 13,917,529,185.90/135,086.43
  6. Step 6: Final answer
    x = 103,026.85

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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.