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Finding the Fourth Proportional to 118,612.26, 163,689.80 and 64,901.97

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Solution

The fourth proportional to 118,612.26, 163,689.80 and 64,901.97 is: 89,567.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,612.26 : 163,689.80 = 64,901.97 : x
  2. Step 2: Convert to fraction form
    118,612.26/163,689.80 = 64,901.97/x
  3. Step 3: Cross multiply
    118,612.26x = 163,689.80 × 64,901.97
  4. Step 4: Simplify right side
    118,612.26x = 10,623,790,164.40
  5. Step 5: Solve for x
    x = 10,623,790,164.40/118,612.26
  6. Step 6: Final answer
    x = 89,567.39

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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.