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Finding the Fourth Proportional to 212,078.60, 318,101.34 and 93,753.80

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Solution

The fourth proportional to 212,078.60, 318,101.34 and 93,753.80 is: 140,623.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,078.60 : 318,101.34 = 93,753.80 : x
  2. Step 2: Convert to fraction form
    212,078.60/318,101.34 = 93,753.80/x
  3. Step 3: Cross multiply
    212,078.60x = 318,101.34 × 93,753.80
  4. Step 4: Simplify right side
    212,078.60x = 29,823,209,410.09
  5. Step 5: Solve for x
    x = 29,823,209,410.09/212,078.60
  6. Step 6: Final answer
    x = 140,623.38

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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.