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Finding the Fourth Proportional to 120,627.91, 166,463.30 and 69,638.91

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Solution

The fourth proportional to 120,627.91, 166,463.30 and 69,638.91 is: 96,099.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,627.91 : 166,463.30 = 69,638.91 : x
  2. Step 2: Convert to fraction form
    120,627.91/166,463.30 = 69,638.91/x
  3. Step 3: Cross multiply
    120,627.91x = 166,463.30 × 69,638.91
  4. Step 4: Simplify right side
    120,627.91x = 11,592,322,767.00
  5. Step 5: Solve for x
    x = 11,592,322,767.00/120,627.91
  6. Step 6: Final answer
    x = 96,099.84

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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.