Home / 111,243.15-166,919.40-52,068.60

Finding the Fourth Proportional to 111,243.15, 166,919.40 and 52,068.60

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Solution

The fourth proportional to 111,243.15, 166,919.40 and 52,068.60 is: 78,128.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,243.15 : 166,919.40 = 52,068.60 : x
  2. Step 2: Convert to fraction form
    111,243.15/166,919.40 = 52,068.60/x
  3. Step 3: Cross multiply
    111,243.15x = 166,919.40 × 52,068.60
  4. Step 4: Simplify right side
    111,243.15x = 8,691,259,470.84
  5. Step 5: Solve for x
    x = 8,691,259,470.84/111,243.15
  6. Step 6: Final answer
    x = 78,128.49

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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.