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Finding the Fourth Proportional to 193,487.60, 290,162.28 and 68,803.76

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Solution

The fourth proportional to 193,487.60, 290,162.28 and 68,803.76 is: 103,181.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,487.60 : 290,162.28 = 68,803.76 : x
  2. Step 2: Convert to fraction form
    193,487.60/290,162.28 = 68,803.76/x
  3. Step 3: Cross multiply
    193,487.60x = 290,162.28 × 68,803.76
  4. Step 4: Simplify right side
    193,487.60x = 19,964,255,874.17
  5. Step 5: Solve for x
    x = 19,964,255,874.17/193,487.60
  6. Step 6: Final answer
    x = 103,181.06

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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.