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Finding the Fourth Proportional to 120,714.51, 166,584.77 and 66,999.99

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Solution

The fourth proportional to 120,714.51, 166,584.77 and 66,999.99 is: 92,459.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,714.51 : 166,584.77 = 66,999.99 : x
  2. Step 2: Convert to fraction form
    120,714.51/166,584.77 = 66,999.99/x
  3. Step 3: Cross multiply
    120,714.51x = 166,584.77 × 66,999.99
  4. Step 4: Simplify right side
    120,714.51x = 11,161,177,589.15
  5. Step 5: Solve for x
    x = 11,161,177,589.15/120,714.51
  6. Step 6: Final answer
    x = 92,459.29

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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.