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Finding the Fourth Proportional to 99,994.60, 149,748.90 and 53,144.20

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Solution

The fourth proportional to 99,994.60, 149,748.90 and 53,144.20 is: 79,587.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,994.60 : 149,748.90 = 53,144.20 : x
  2. Step 2: Convert to fraction form
    99,994.60/149,748.90 = 53,144.20/x
  3. Step 3: Cross multiply
    99,994.60x = 149,748.90 × 53,144.20
  4. Step 4: Simplify right side
    99,994.60x = 7,958,285,491.38
  5. Step 5: Solve for x
    x = 7,958,285,491.38/99,994.60
  6. Step 6: Final answer
    x = 79,587.15

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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.