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Finding the Fourth Proportional to 118,892.92, 164,045.28 and 80,657.68

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Solution

The fourth proportional to 118,892.92, 164,045.28 and 80,657.68 is: 111,289.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,892.92 : 164,045.28 = 80,657.68 : x
  2. Step 2: Convert to fraction form
    118,892.92/164,045.28 = 80,657.68/x
  3. Step 3: Cross multiply
    118,892.92x = 164,045.28 × 80,657.68
  4. Step 4: Simplify right side
    118,892.92x = 13,231,511,699.75
  5. Step 5: Solve for x
    x = 13,231,511,699.75/118,892.92
  6. Step 6: Final answer
    x = 111,289.32

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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.