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Finding the Fourth Proportional to 135,655.70, 203,483.55 and 129,896.60

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Solution

The fourth proportional to 135,655.70, 203,483.55 and 129,896.60 is: 194,844.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,655.70 : 203,483.55 = 129,896.60 : x
  2. Step 2: Convert to fraction form
    135,655.70/203,483.55 = 129,896.60/x
  3. Step 3: Cross multiply
    135,655.70x = 203,483.55 × 129,896.60
  4. Step 4: Simplify right side
    135,655.70x = 26,431,821,300.93
  5. Step 5: Solve for x
    x = 26,431,821,300.93/135,655.70
  6. Step 6: Final answer
    x = 194,844.90

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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.