Home / 135,344.48-203,015.84-105,787.20

Finding the Fourth Proportional to 135,344.48, 203,015.84 and 105,787.20

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Solution

The fourth proportional to 135,344.48, 203,015.84 and 105,787.20 is: 158,680.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,344.48 : 203,015.84 = 105,787.20 : x
  2. Step 2: Convert to fraction form
    135,344.48/203,015.84 = 105,787.20/x
  3. Step 3: Cross multiply
    135,344.48x = 203,015.84 × 105,787.20
  4. Step 4: Simplify right side
    135,344.48x = 21,476,477,269.25
  5. Step 5: Solve for x
    x = 21,476,477,269.25/135,344.48
  6. Step 6: Final answer
    x = 158,680.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.