Home / 120,023.62-165,635.94-66,312.10

Finding the Fourth Proportional to 120,023.62, 165,635.94 and 66,312.10

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Solution

The fourth proportional to 120,023.62, 165,635.94 and 66,312.10 is: 91,512.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,023.62 : 165,635.94 = 66,312.10 : x
  2. Step 2: Convert to fraction form
    120,023.62/165,635.94 = 66,312.10/x
  3. Step 3: Cross multiply
    120,023.62x = 165,635.94 × 66,312.10
  4. Step 4: Simplify right side
    120,023.62x = 10,983,667,016.87
  5. Step 5: Solve for x
    x = 10,983,667,016.87/120,023.62
  6. Step 6: Final answer
    x = 91,512.55

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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.