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Finding the Fourth Proportional to 99,099.43, 148,671.84 and 42,948.94

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Solution

The fourth proportional to 99,099.43, 148,671.84 and 42,948.94 is: 64,433.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,099.43 : 148,671.84 = 42,948.94 : x
  2. Step 2: Convert to fraction form
    99,099.43/148,671.84 = 42,948.94/x
  3. Step 3: Cross multiply
    99,099.43x = 148,671.84 × 42,948.94
  4. Step 4: Simplify right side
    99,099.43x = 6,385,297,935.85
  5. Step 5: Solve for x
    x = 6,385,297,935.85/99,099.43
  6. Step 6: Final answer
    x = 64,433.25

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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.