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Finding the Fourth Proportional to 118,677, 163,774.26 and 65,685

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Solution

The fourth proportional to 118,677, 163,774.26 and 65,685 is: 90,645.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,677 : 163,774.26 = 65,685 : x
  2. Step 2: Convert to fraction form
    118,677/163,774.26 = 65,685/x
  3. Step 3: Cross multiply
    118,677x = 163,774.26 × 65,685
  4. Step 4: Simplify right side
    118,677x = 10,757,512,268.10
  5. Step 5: Solve for x
    x = 10,757,512,268.10/118,677
  6. Step 6: Final answer
    x = 90,645.30

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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.