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Finding the Fourth Proportional to 135,935.80, 203,903.70 and 125,438.20

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Solution

The fourth proportional to 135,935.80, 203,903.70 and 125,438.20 is: 188,157.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,935.80 : 203,903.70 = 125,438.20 : x
  2. Step 2: Convert to fraction form
    135,935.80/203,903.70 = 125,438.20/x
  3. Step 3: Cross multiply
    135,935.80x = 203,903.70 × 125,438.20
  4. Step 4: Simplify right side
    135,935.80x = 25,577,313,101.34
  5. Step 5: Solve for x
    x = 25,577,313,101.34/135,935.80
  6. Step 6: Final answer
    x = 188,157.30

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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.