Home / 100,884.24-139,214.87-57,861.50

Finding the Fourth Proportional to 100,884.24, 139,214.87 and 57,861.50

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Solution

The fourth proportional to 100,884.24, 139,214.87 and 57,861.50 is: 79,845.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,884.24 : 139,214.87 = 57,861.50 : x
  2. Step 2: Convert to fraction form
    100,884.24/139,214.87 = 57,861.50/x
  3. Step 3: Cross multiply
    100,884.24x = 139,214.87 × 57,861.50
  4. Step 4: Simplify right side
    100,884.24x = 8,055,180,432.10
  5. Step 5: Solve for x
    x = 8,055,180,432.10/100,884.24
  6. Step 6: Final answer
    x = 79,845.78

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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.