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Finding the Fourth Proportional to 120,718.94, 166,600.52 and 69,748.88

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Solution

The fourth proportional to 120,718.94, 166,600.52 and 69,748.88 is: 96,258.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,718.94 : 166,600.52 = 69,748.88 : x
  2. Step 2: Convert to fraction form
    120,718.94/166,600.52 = 69,748.88/x
  3. Step 3: Cross multiply
    120,718.94x = 166,600.52 × 69,748.88
  4. Step 4: Simplify right side
    120,718.94x = 11,620,199,677.42
  5. Step 5: Solve for x
    x = 11,620,199,677.42/120,718.94
  6. Step 6: Final answer
    x = 96,258.30

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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.