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Finding the Fourth Proportional to 104,803.88, 144,383.46 and 72,917.96

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Solution

The fourth proportional to 104,803.88, 144,383.46 and 72,917.96 is: 100,455.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,803.88 : 144,383.46 = 72,917.96 : x
  2. Step 2: Convert to fraction form
    104,803.88/144,383.46 = 72,917.96/x
  3. Step 3: Cross multiply
    104,803.88x = 144,383.46 × 72,917.96
  4. Step 4: Simplify right side
    104,803.88x = 10,528,147,360.94
  5. Step 5: Solve for x
    x = 10,528,147,360.94/104,803.88
  6. Step 6: Final answer
    x = 100,455.70

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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.