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Finding the Fourth Proportional to 98,194.20, 146,999.70 and 87,696.60

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Solution

The fourth proportional to 98,194.20, 146,999.70 and 87,696.60 is: 131,284.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,194.20 : 146,999.70 = 87,696.60 : x
  2. Step 2: Convert to fraction form
    98,194.20/146,999.70 = 87,696.60/x
  3. Step 3: Cross multiply
    98,194.20x = 146,999.70 × 87,696.60
  4. Step 4: Simplify right side
    98,194.20x = 12,891,373,891.02
  5. Step 5: Solve for x
    x = 12,891,373,891.02/98,194.20
  6. Step 6: Final answer
    x = 131,284.47

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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.