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Finding the Fourth Proportional to 112,489.96, 168,997.38 and 65,775.64

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Solution

The fourth proportional to 112,489.96, 168,997.38 and 65,775.64 is: 98,816.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,489.96 : 168,997.38 = 65,775.64 : x
  2. Step 2: Convert to fraction form
    112,489.96/168,997.38 = 65,775.64/x
  3. Step 3: Cross multiply
    112,489.96x = 168,997.38 × 65,775.64
  4. Step 4: Simplify right side
    112,489.96x = 11,115,910,827.82
  5. Step 5: Solve for x
    x = 11,115,910,827.82/112,489.96
  6. Step 6: Final answer
    x = 98,816.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.