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Finding the Fourth Proportional to 100,877.83, 139,169.64 and 60,033.79

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Solution

The fourth proportional to 100,877.83, 139,169.64 and 60,033.79 is: 82,821.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,877.83 : 139,169.64 = 60,033.79 : x
  2. Step 2: Convert to fraction form
    100,877.83/139,169.64 = 60,033.79/x
  3. Step 3: Cross multiply
    100,877.83x = 139,169.64 × 60,033.79
  4. Step 4: Simplify right side
    100,877.83x = 8,354,880,942.14
  5. Step 5: Solve for x
    x = 8,354,880,942.14/100,877.83
  6. Step 6: Final answer
    x = 82,821.78

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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.