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Finding the Fourth Proportional to 120,651.70, 166,493.70 and 66,936.14

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Solution

The fourth proportional to 120,651.70, 166,493.70 and 66,936.14 is: 92,368.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,651.70 : 166,493.70 = 66,936.14 : x
  2. Step 2: Convert to fraction form
    120,651.70/166,493.70 = 66,936.14/x
  3. Step 3: Cross multiply
    120,651.70x = 166,493.70 × 66,936.14
  4. Step 4: Simplify right side
    120,651.70x = 11,144,445,612.32
  5. Step 5: Solve for x
    x = 11,144,445,612.32/120,651.70
  6. Step 6: Final answer
    x = 92,368.74

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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.