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Finding the Fourth Proportional to 104,879.40, 144,733.86 and 57,132.60

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Solution

The fourth proportional to 104,879.40, 144,733.86 and 57,132.60 is: 78,843.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,879.40 : 144,733.86 = 57,132.60 : x
  2. Step 2: Convert to fraction form
    104,879.40/144,733.86 = 57,132.60/x
  3. Step 3: Cross multiply
    104,879.40x = 144,733.86 × 57,132.60
  4. Step 4: Simplify right side
    104,879.40x = 8,269,021,729.84
  5. Step 5: Solve for x
    x = 8,269,021,729.84/104,879.40
  6. Step 6: Final answer
    x = 78,843.14

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1.5x scale

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.