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Finding the Fourth Proportional to 185,999.80, 279,072.60 and 67,683.10

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Solution

The fourth proportional to 185,999.80, 279,072.60 and 67,683.10 is: 101,551.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,999.80 : 279,072.60 = 67,683.10 : x
  2. Step 2: Convert to fraction form
    185,999.80/279,072.60 = 67,683.10/x
  3. Step 3: Cross multiply
    185,999.80x = 279,072.60 × 67,683.10
  4. Step 4: Simplify right side
    185,999.80x = 18,888,498,693.06
  5. Step 5: Solve for x
    x = 18,888,498,693.06/185,999.80
  6. Step 6: Final answer
    x = 101,551.18

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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.