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Finding the Fourth Proportional to 99,099.68, 148,672.22 and 42,949.22

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Solution

The fourth proportional to 99,099.68, 148,672.22 and 42,949.22 is: 64,433.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,099.68 : 148,672.22 = 42,949.22 : x
  2. Step 2: Convert to fraction form
    99,099.68/148,672.22 = 42,949.22/x
  3. Step 3: Cross multiply
    99,099.68x = 148,672.22 × 42,949.22
  4. Step 4: Simplify right side
    99,099.68x = 6,385,354,926.56
  5. Step 5: Solve for x
    x = 6,385,354,926.56/99,099.68
  6. Step 6: Final answer
    x = 64,433.66

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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.