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Finding the Fourth Proportional to 118,981.80, 164,193.86 and 65,265.84

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Solution

The fourth proportional to 118,981.80, 164,193.86 and 65,265.84 is: 90,066.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,981.80 : 164,193.86 = 65,265.84 : x
  2. Step 2: Convert to fraction form
    118,981.80/164,193.86 = 65,265.84/x
  3. Step 3: Cross multiply
    118,981.80x = 164,193.86 × 65,265.84
  4. Step 4: Simplify right side
    118,981.80x = 10,716,250,195.74
  5. Step 5: Solve for x
    x = 10,716,250,195.74/118,981.80
  6. Step 6: Final answer
    x = 90,066.30

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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.