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Finding the Fourth Proportional to 96,137.72, 132,728.50 and 65,972.60

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Solution

The fourth proportional to 96,137.72, 132,728.50 and 65,972.60 is: 91,082.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,137.72 : 132,728.50 = 65,972.60 : x
  2. Step 2: Convert to fraction form
    96,137.72/132,728.50 = 65,972.60/x
  3. Step 3: Cross multiply
    96,137.72x = 132,728.50 × 65,972.60
  4. Step 4: Simplify right side
    96,137.72x = 8,756,444,239.10
  5. Step 5: Solve for x
    x = 8,756,444,239.10/96,137.72
  6. Step 6: Final answer
    x = 91,082.30

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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.