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Finding the Fourth Proportional to 147,898.74, 204,198.78 and 87,488.79

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Solution

The fourth proportional to 147,898.74, 204,198.78 and 87,488.79 is: 120,792.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,898.74 : 204,198.78 = 87,488.79 : x
  2. Step 2: Convert to fraction form
    147,898.74/204,198.78 = 87,488.79/x
  3. Step 3: Cross multiply
    147,898.74x = 204,198.78 × 87,488.79
  4. Step 4: Simplify right side
    147,898.74x = 17,865,104,181.68
  5. Step 5: Solve for x
    x = 17,865,104,181.68/147,898.74
  6. Step 6: Final answer
    x = 120,792.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.