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Finding the Fourth Proportional to 112,857.80, 169,329.90 and 111,086.60

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Solution

The fourth proportional to 112,857.80, 169,329.90 and 111,086.60 is: 166,672.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,857.80 : 169,329.90 = 111,086.60 : x
  2. Step 2: Convert to fraction form
    112,857.80/169,329.90 = 111,086.60/x
  3. Step 3: Cross multiply
    112,857.80x = 169,329.90 × 111,086.60
  4. Step 4: Simplify right side
    112,857.80x = 18,810,282,869.34
  5. Step 5: Solve for x
    x = 18,810,282,869.34/112,857.80
  6. Step 6: Final answer
    x = 166,672.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.