Home / 120,391.85-166,140.68-66,676.81

Finding the Fourth Proportional to 120,391.85, 166,140.68 and 66,676.81

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Solution

The fourth proportional to 120,391.85, 166,140.68 and 66,676.81 is: 92,013.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,391.85 : 166,140.68 = 66,676.81 : x
  2. Step 2: Convert to fraction form
    120,391.85/166,140.68 = 66,676.81/x
  3. Step 3: Cross multiply
    120,391.85x = 166,140.68 × 66,676.81
  4. Step 4: Simplify right side
    120,391.85x = 11,077,730,553.63
  5. Step 5: Solve for x
    x = 11,077,730,553.63/120,391.85
  6. Step 6: Final answer
    x = 92,013.96

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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.