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Finding the Fourth Proportional to 120,472.53, 166,258.35 and 66,763.59

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Solution

The fourth proportional to 120,472.53, 166,258.35 and 66,763.59 is: 92,137.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,472.53 : 166,258.35 = 66,763.59 : x
  2. Step 2: Convert to fraction form
    120,472.53/166,258.35 = 66,763.59/x
  3. Step 3: Cross multiply
    120,472.53x = 166,258.35 × 66,763.59
  4. Step 4: Simplify right side
    120,472.53x = 11,100,004,313.48
  5. Step 5: Solve for x
    x = 11,100,004,313.48/120,472.53
  6. Step 6: Final answer
    x = 92,137.22

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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.