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Finding the Fourth Proportional to 120,612.69, 166,453.52 and 66,899.97

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Solution

The fourth proportional to 120,612.69, 166,453.52 and 66,899.97 is: 92,326.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,612.69 : 166,453.52 = 66,899.97 : x
  2. Step 2: Convert to fraction form
    120,612.69/166,453.52 = 66,899.97/x
  3. Step 3: Cross multiply
    120,612.69x = 166,453.52 × 66,899.97
  4. Step 4: Simplify right side
    120,612.69x = 11,135,735,159.89
  5. Step 5: Solve for x
    x = 11,135,735,159.89/120,612.69
  6. Step 6: Final answer
    x = 92,326.40

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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.