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Finding the Fourth Proportional to 120,323.64, 166,041.24 and 66,604.86

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Solution

The fourth proportional to 120,323.64, 166,041.24 and 66,604.86 is: 91,911.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,323.64 : 166,041.24 = 66,604.86 : x
  2. Step 2: Convert to fraction form
    120,323.64/166,041.24 = 66,604.86/x
  3. Step 3: Cross multiply
    120,323.64x = 166,041.24 × 66,604.86
  4. Step 4: Simplify right side
    120,323.64x = 11,059,153,544.43
  5. Step 5: Solve for x
    x = 11,059,153,544.43/120,323.64
  6. Step 6: Final answer
    x = 91,911.73

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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.