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Finding the Fourth Proportional to 135,122, 202,681.38 and 126,901.34

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Solution

The fourth proportional to 135,122, 202,681.38 and 126,901.34 is: 190,350.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,122 : 202,681.38 = 126,901.34 : x
  2. Step 2: Convert to fraction form
    135,122/202,681.38 = 126,901.34/x
  3. Step 3: Cross multiply
    135,122x = 202,681.38 × 126,901.34
  4. Step 4: Simplify right side
    135,122x = 25,720,538,715.05
  5. Step 5: Solve for x
    x = 25,720,538,715.05/135,122
  6. Step 6: Final answer
    x = 190,350.49

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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.