Home / 120,126.57-165,767.54-66,408.38

Finding the Fourth Proportional to 120,126.57, 165,767.54 and 66,408.38

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Solution

The fourth proportional to 120,126.57, 165,767.54 and 66,408.38 is: 91,639.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,126.57 : 165,767.54 = 66,408.38 : x
  2. Step 2: Convert to fraction form
    120,126.57/165,767.54 = 66,408.38/x
  3. Step 3: Cross multiply
    120,126.57x = 165,767.54 × 66,408.38
  4. Step 4: Simplify right side
    120,126.57x = 11,008,353,787.99
  5. Step 5: Solve for x
    x = 11,008,353,787.99/120,126.57
  6. Step 6: Final answer
    x = 91,639.62

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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.