Home / 118,716.68-163,822.76-64,991.40

Finding the Fourth Proportional to 118,716.68, 163,822.76 and 64,991.40

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Solution

The fourth proportional to 118,716.68, 163,822.76 and 64,991.40 is: 89,684.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,716.68 : 163,822.76 = 64,991.40 : x
  2. Step 2: Convert to fraction form
    118,716.68/163,822.76 = 64,991.40/x
  3. Step 3: Cross multiply
    118,716.68x = 163,822.76 × 64,991.40
  4. Step 4: Simplify right side
    118,716.68x = 10,647,070,524.26
  5. Step 5: Solve for x
    x = 10,647,070,524.26/118,716.68
  6. Step 6: Final answer
    x = 89,684.71

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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.