Home / 135,212.19-186,591.65-74,787.27

Finding the Fourth Proportional to 135,212.19, 186,591.65 and 74,787.27

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Solution

The fourth proportional to 135,212.19, 186,591.65 and 74,787.27 is: 103,205.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,212.19 : 186,591.65 = 74,787.27 : x
  2. Step 2: Convert to fraction form
    135,212.19/186,591.65 = 74,787.27/x
  3. Step 3: Cross multiply
    135,212.19x = 186,591.65 × 74,787.27
  4. Step 4: Simplify right side
    135,212.19x = 13,954,679,734.36
  5. Step 5: Solve for x
    x = 13,954,679,734.36/135,212.19
  6. Step 6: Final answer
    x = 103,205.78

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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.