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Finding the Fourth Proportional to 118,536.80, 163,299.12 and 82,661.60

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Solution

The fourth proportional to 118,536.80, 163,299.12 and 82,661.60 is: 113,876.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,536.80 : 163,299.12 = 82,661.60 : x
  2. Step 2: Convert to fraction form
    118,536.80/163,299.12 = 82,661.60/x
  3. Step 3: Cross multiply
    118,536.80x = 163,299.12 × 82,661.60
  4. Step 4: Simplify right side
    118,536.80x = 13,498,566,537.79
  5. Step 5: Solve for x
    x = 13,498,566,537.79/118,536.80
  6. Step 6: Final answer
    x = 113,876.59

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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.