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Finding the Fourth Proportional to 99,994.60, 149,819.10 and 84,442.60

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Solution

The fourth proportional to 99,994.60, 149,819.10 and 84,442.60 is: 126,517.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,994.60 : 149,819.10 = 84,442.60 : x
  2. Step 2: Convert to fraction form
    99,994.60/149,819.10 = 84,442.60/x
  3. Step 3: Cross multiply
    99,994.60x = 149,819.10 × 84,442.60
  4. Step 4: Simplify right side
    99,994.60x = 12,651,114,333.66
  5. Step 5: Solve for x
    x = 12,651,114,333.66/99,994.60
  6. Step 6: Final answer
    x = 126,517.98

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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.