Home / 120,830.55-166,792.67-80,529.61

Finding the Fourth Proportional to 120,830.55, 166,792.67 and 80,529.61

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Solution

The fourth proportional to 120,830.55, 166,792.67 and 80,529.61 is: 111,161.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,830.55 : 166,792.67 = 80,529.61 : x
  2. Step 2: Convert to fraction form
    120,830.55/166,792.67 = 80,529.61/x
  3. Step 3: Cross multiply
    120,830.55x = 166,792.67 × 80,529.61
  4. Step 4: Simplify right side
    120,830.55x = 13,431,748,558.08
  5. Step 5: Solve for x
    x = 13,431,748,558.08/120,830.55
  6. Step 6: Final answer
    x = 111,161.86

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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.