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Finding the Fourth Proportional to 99,155.62, 148,698.87 and 39,975.94

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Solution

The fourth proportional to 99,155.62, 148,698.87 and 39,975.94 is: 59,949.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,155.62 : 148,698.87 = 39,975.94 : x
  2. Step 2: Convert to fraction form
    99,155.62/148,698.87 = 39,975.94/x
  3. Step 3: Cross multiply
    99,155.62x = 148,698.87 × 39,975.94
  4. Step 4: Simplify right side
    99,155.62x = 5,944,377,105.19
  5. Step 5: Solve for x
    x = 5,944,377,105.19/99,155.62
  6. Step 6: Final answer
    x = 59,949.98

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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.