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Finding the Fourth Proportional to 120,099.60, 165,737.43 and 65,651.97

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Solution

The fourth proportional to 120,099.60, 165,737.43 and 65,651.97 is: 90,599.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,099.60 : 165,737.43 = 65,651.97 : x
  2. Step 2: Convert to fraction form
    120,099.60/165,737.43 = 65,651.97/x
  3. Step 3: Cross multiply
    120,099.60x = 165,737.43 × 65,651.97
  4. Step 4: Simplify right side
    120,099.60x = 10,880,988,782.24
  5. Step 5: Solve for x
    x = 10,880,988,782.24/120,099.60
  6. Step 6: Final answer
    x = 90,599.71

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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.