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Finding the Fourth Proportional to 120,708.72, 166,539.48 and 69,714.72

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Solution

The fourth proportional to 120,708.72, 166,539.48 and 69,714.72 is: 96,184.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,708.72 : 166,539.48 = 69,714.72 : x
  2. Step 2: Convert to fraction form
    120,708.72/166,539.48 = 69,714.72/x
  3. Step 3: Cross multiply
    120,708.72x = 166,539.48 × 69,714.72
  4. Step 4: Simplify right side
    120,708.72x = 11,610,253,217.15
  5. Step 5: Solve for x
    x = 11,610,253,217.15/120,708.72
  6. Step 6: Final answer
    x = 96,184.05

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.