Home / 120,390.38-166,139.27-66,674.27

Finding the Fourth Proportional to 120,390.38, 166,139.27 and 66,674.27

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Solution

The fourth proportional to 120,390.38, 166,139.27 and 66,674.27 is: 92,010.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,390.38 : 166,139.27 = 66,674.27 : x
  2. Step 2: Convert to fraction form
    120,390.38/166,139.27 = 66,674.27/x
  3. Step 3: Cross multiply
    120,390.38x = 166,139.27 × 66,674.27
  4. Step 4: Simplify right side
    120,390.38x = 11,077,213,881.57
  5. Step 5: Solve for x
    x = 11,077,213,881.57/120,390.38
  6. Step 6: Final answer
    x = 92,010.79

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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.