Home / 123,845.40-185,768.10-89,112.60

Finding the Fourth Proportional to 123,845.40, 185,768.10 and 89,112.60

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Solution

The fourth proportional to 123,845.40, 185,768.10 and 89,112.60 is: 133,668.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,845.40 : 185,768.10 = 89,112.60 : x
  2. Step 2: Convert to fraction form
    123,845.40/185,768.10 = 89,112.60/x
  3. Step 3: Cross multiply
    123,845.40x = 185,768.10 × 89,112.60
  4. Step 4: Simplify right side
    123,845.40x = 16,554,278,388.06
  5. Step 5: Solve for x
    x = 16,554,278,388.06/123,845.40
  6. Step 6: Final answer
    x = 133,668.90

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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.