Home / 120,478.13-166,263.46-66,758.12

Finding the Fourth Proportional to 120,478.13, 166,263.46 and 66,758.12

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Solution

The fourth proportional to 120,478.13, 166,263.46 and 66,758.12 is: 92,128.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,478.13 : 166,263.46 = 66,758.12 : x
  2. Step 2: Convert to fraction form
    120,478.13/166,263.46 = 66,758.12/x
  3. Step 3: Cross multiply
    120,478.13x = 166,263.46 × 66,758.12
  4. Step 4: Simplify right side
    120,478.13x = 11,099,435,016.08
  5. Step 5: Solve for x
    x = 11,099,435,016.08/120,478.13
  6. Step 6: Final answer
    x = 92,128.22

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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.