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Finding the Fourth Proportional to 118,308.95, 163,265.11 and 64,593.80

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Solution

The fourth proportional to 118,308.95, 163,265.11 and 64,593.80 is: 89,138.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,308.95 : 163,265.11 = 64,593.80 : x
  2. Step 2: Convert to fraction form
    118,308.95/163,265.11 = 64,593.80/x
  3. Step 3: Cross multiply
    118,308.95x = 163,265.11 × 64,593.80
  4. Step 4: Simplify right side
    118,308.95x = 10,545,912,884.51
  5. Step 5: Solve for x
    x = 10,545,912,884.51/118,308.95
  6. Step 6: Final answer
    x = 89,138.76

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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.