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Finding the Fourth Proportional to 118,734.98, 163,854.01 and 64,286.87

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Solution

The fourth proportional to 118,734.98, 163,854.01 and 64,286.87 is: 88,715.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,734.98 : 163,854.01 = 64,286.87 : x
  2. Step 2: Convert to fraction form
    118,734.98/163,854.01 = 64,286.87/x
  3. Step 3: Cross multiply
    118,734.98x = 163,854.01 × 64,286.87
  4. Step 4: Simplify right side
    118,734.98x = 10,533,661,118.41
  5. Step 5: Solve for x
    x = 10,533,661,118.41/118,734.98
  6. Step 6: Final answer
    x = 88,715.74

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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.