Home / 120,899.18-166,840.96-67,189.20

Finding the Fourth Proportional to 120,899.18, 166,840.96 and 67,189.20

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Solution

The fourth proportional to 120,899.18, 166,840.96 and 67,189.20 is: 92,721.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,899.18 : 166,840.96 = 67,189.20 : x
  2. Step 2: Convert to fraction form
    120,899.18/166,840.96 = 67,189.20/x
  3. Step 3: Cross multiply
    120,899.18x = 166,840.96 × 67,189.20
  4. Step 4: Simplify right side
    120,899.18x = 11,209,910,629.63
  5. Step 5: Solve for x
    x = 11,209,910,629.63/120,899.18
  6. Step 6: Final answer
    x = 92,721.15

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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.