Home / 120,817.05-166,729.57-66,371.51

Finding the Fourth Proportional to 120,817.05, 166,729.57 and 66,371.51

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Solution

The fourth proportional to 120,817.05, 166,729.57 and 66,371.51 is: 91,593.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,817.05 : 166,729.57 = 66,371.51 : x
  2. Step 2: Convert to fraction form
    120,817.05/166,729.57 = 66,371.51/x
  3. Step 3: Cross multiply
    120,817.05x = 166,729.57 × 66,371.51
  4. Step 4: Simplify right side
    120,817.05x = 11,066,093,946.79
  5. Step 5: Solve for x
    x = 11,066,093,946.79/120,817.05
  6. Step 6: Final answer
    x = 91,593.81

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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.