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Finding the Fourth Proportional to 107,505.80, 161,201.10 and 45,105.80

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Solution

The fourth proportional to 107,505.80, 161,201.10 and 45,105.80 is: 67,634.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,505.80 : 161,201.10 = 45,105.80 : x
  2. Step 2: Convert to fraction form
    107,505.80/161,201.10 = 45,105.80/x
  3. Step 3: Cross multiply
    107,505.80x = 161,201.10 × 45,105.80
  4. Step 4: Simplify right side
    107,505.80x = 7,271,104,576.38
  5. Step 5: Solve for x
    x = 7,271,104,576.38/107,505.80
  6. Step 6: Final answer
    x = 67,634.53

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1.5x scale

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.