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Finding the Fourth Proportional to 99,679.78, 149,548.53 and 29,560.78

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Solution

The fourth proportional to 99,679.78, 149,548.53 and 29,560.78 is: 44,349.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,679.78 : 149,548.53 = 29,560.78 : x
  2. Step 2: Convert to fraction form
    99,679.78/149,548.53 = 29,560.78/x
  3. Step 3: Cross multiply
    99,679.78x = 149,548.53 × 29,560.78
  4. Step 4: Simplify right side
    99,679.78x = 4,420,771,194.65
  5. Step 5: Solve for x
    x = 4,420,771,194.65/99,679.78
  6. Step 6: Final answer
    x = 44,349.73

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1.5x scale

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.