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Finding the Fourth Proportional to 118,977.92, 164,194.12 and 65,265.20

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Solution

The fourth proportional to 118,977.92, 164,194.12 and 65,265.20 is: 90,068.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,977.92 : 164,194.12 = 65,265.20 : x
  2. Step 2: Convert to fraction form
    118,977.92/164,194.12 = 65,265.20/x
  3. Step 3: Cross multiply
    118,977.92x = 164,194.12 × 65,265.20
  4. Step 4: Simplify right side
    118,977.92x = 10,716,162,080.62
  5. Step 5: Solve for x
    x = 10,716,162,080.62/118,977.92
  6. Step 6: Final answer
    x = 90,068.49

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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.