Home / 120,125.30-165,760.20-66,401.64

Finding the Fourth Proportional to 120,125.30, 165,760.20 and 66,401.64

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Solution

The fourth proportional to 120,125.30, 165,760.20 and 66,401.64 is: 91,627.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,125.30 : 165,760.20 = 66,401.64 : x
  2. Step 2: Convert to fraction form
    120,125.30/165,760.20 = 66,401.64/x
  3. Step 3: Cross multiply
    120,125.30x = 165,760.20 × 66,401.64
  4. Step 4: Simplify right side
    120,125.30x = 11,006,749,126.73
  5. Step 5: Solve for x
    x = 11,006,749,126.73/120,125.30
  6. Step 6: Final answer
    x = 91,627.24

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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.