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Finding the Fourth Proportional to 120,425.82, 166,030.02 and 103,610.70

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Solution

The fourth proportional to 120,425.82, 166,030.02 and 103,610.70 is: 142,847.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,425.82 : 166,030.02 = 103,610.70 : x
  2. Step 2: Convert to fraction form
    120,425.82/166,030.02 = 103,610.70/x
  3. Step 3: Cross multiply
    120,425.82x = 166,030.02 × 103,610.70
  4. Step 4: Simplify right side
    120,425.82x = 17,202,486,593.21
  5. Step 5: Solve for x
    x = 17,202,486,593.21/120,425.82
  6. Step 6: Final answer
    x = 142,847.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.