Home / 120,434.72-166,201.07-66,720.87

Finding the Fourth Proportional to 120,434.72, 166,201.07 and 66,720.87

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Solution

The fourth proportional to 120,434.72, 166,201.07 and 66,720.87 is: 92,075.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,434.72 : 166,201.07 = 66,720.87 : x
  2. Step 2: Convert to fraction form
    120,434.72/166,201.07 = 66,720.87/x
  3. Step 3: Cross multiply
    120,434.72x = 166,201.07 × 66,720.87
  4. Step 4: Simplify right side
    120,434.72x = 11,089,079,651.73
  5. Step 5: Solve for x
    x = 11,089,079,651.73/120,434.72
  6. Step 6: Final answer
    x = 92,075.44

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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.