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Finding the Fourth Proportional to 104,991.60, 144,889.09 and 57,245.75

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Solution

The fourth proportional to 104,991.60, 144,889.09 and 57,245.75 is: 78,999.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,991.60 : 144,889.09 = 57,245.75 : x
  2. Step 2: Convert to fraction form
    104,991.60/144,889.09 = 57,245.75/x
  3. Step 3: Cross multiply
    104,991.60x = 144,889.09 × 57,245.75
  4. Step 4: Simplify right side
    104,991.60x = 8,294,283,756.31
  5. Step 5: Solve for x
    x = 8,294,283,756.31/104,991.60
  6. Step 6: Final answer
    x = 78,999.50

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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.