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Finding the Fourth Proportional to 118,754.11, 163,880.78 and 64,306.11

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Solution

The fourth proportional to 118,754.11, 163,880.78 and 64,306.11 is: 88,742.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,754.11 : 163,880.78 = 64,306.11 : x
  2. Step 2: Convert to fraction form
    118,754.11/163,880.78 = 64,306.11/x
  3. Step 3: Cross multiply
    118,754.11x = 163,880.78 × 64,306.11
  4. Step 4: Simplify right side
    118,754.11x = 10,538,535,144.04
  5. Step 5: Solve for x
    x = 10,538,535,144.04/118,754.11
  6. Step 6: Final answer
    x = 88,742.49

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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.