Home / 120,821.12-166,728.53-67,109.58

Finding the Fourth Proportional to 120,821.12, 166,728.53 and 67,109.58

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Solution

The fourth proportional to 120,821.12, 166,728.53 and 67,109.58 is: 92,608.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,821.12 : 166,728.53 = 67,109.58 : x
  2. Step 2: Convert to fraction form
    120,821.12/166,728.53 = 67,109.58/x
  3. Step 3: Cross multiply
    120,821.12x = 166,728.53 × 67,109.58
  4. Step 4: Simplify right side
    120,821.12x = 11,189,081,622.32
  5. Step 5: Solve for x
    x = 11,189,081,622.32/120,821.12
  6. Step 6: Final answer
    x = 92,608.66

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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.