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Finding the Fourth Proportional to 120,628.62, 166,468.50 and 66,917.16

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Solution

The fourth proportional to 120,628.62, 166,468.50 and 66,917.16 is: 92,346.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,628.62 : 166,468.50 = 66,917.16 : x
  2. Step 2: Convert to fraction form
    120,628.62/166,468.50 = 66,917.16/x
  3. Step 3: Cross multiply
    120,628.62x = 166,468.50 × 66,917.16
  4. Step 4: Simplify right side
    120,628.62x = 11,139,599,249.46
  5. Step 5: Solve for x
    x = 11,139,599,249.46/120,628.62
  6. Step 6: Final answer
    x = 92,346.24

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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.