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Finding the Fourth Proportional to 111,999.40, 168,344.70 and 109,925.80

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Solution

The fourth proportional to 111,999.40, 168,344.70 and 109,925.80 is: 165,227.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,999.40 : 168,344.70 = 109,925.80 : x
  2. Step 2: Convert to fraction form
    111,999.40/168,344.70 = 109,925.80/x
  3. Step 3: Cross multiply
    111,999.40x = 168,344.70 × 109,925.80
  4. Step 4: Simplify right side
    111,999.40x = 18,505,425,823.26
  5. Step 5: Solve for x
    x = 18,505,425,823.26/111,999.40
  6. Step 6: Final answer
    x = 165,227.90

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1.5x scale

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.