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Finding the Fourth Proportional to 118,654.26, 163,740.06 and 64,939.20

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Solution

The fourth proportional to 118,654.26, 163,740.06 and 64,939.20 is: 89,614.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,654.26 : 163,740.06 = 64,939.20 : x
  2. Step 2: Convert to fraction form
    118,654.26/163,740.06 = 64,939.20/x
  3. Step 3: Cross multiply
    118,654.26x = 163,740.06 × 64,939.20
  4. Step 4: Simplify right side
    118,654.26x = 10,633,148,504.35
  5. Step 5: Solve for x
    x = 10,633,148,504.35/118,654.26
  6. Step 6: Final answer
    x = 89,614.55

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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.