Home / 100,884.43-139,215.13-57,861.68

Finding the Fourth Proportional to 100,884.43, 139,215.13 and 57,861.68

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Solution

The fourth proportional to 100,884.43, 139,215.13 and 57,861.68 is: 79,846.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,884.43 : 139,215.13 = 57,861.68 : x
  2. Step 2: Convert to fraction form
    100,884.43/139,215.13 = 57,861.68/x
  3. Step 3: Cross multiply
    100,884.43x = 139,215.13 × 57,861.68
  4. Step 4: Simplify right side
    100,884.43x = 8,055,221,506.60
  5. Step 5: Solve for x
    x = 8,055,221,506.60/100,884.43
  6. Step 6: Final answer
    x = 79,846.03

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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.