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Finding the Fourth Proportional to 135,389.70, 203,119.79 and 51,150.51

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Solution

The fourth proportional to 135,389.70, 203,119.79 and 51,150.51 is: 76,739.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,389.70 : 203,119.79 = 51,150.51 : x
  2. Step 2: Convert to fraction form
    135,389.70/203,119.79 = 51,150.51/x
  3. Step 3: Cross multiply
    135,389.70x = 203,119.79 × 51,150.51
  4. Step 4: Simplify right side
    135,389.70x = 10,389,680,593.84
  5. Step 5: Solve for x
    x = 10,389,680,593.84/135,389.70
  6. Step 6: Final answer
    x = 76,739.08

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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.