Home / 74,755.15-103,177.71-72,385.09

Finding the Fourth Proportional to 74,755.15, 103,177.71 and 72,385.09

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Solution

The fourth proportional to 74,755.15, 103,177.71 and 72,385.09 is: 99,906.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,755.15 : 103,177.71 = 72,385.09 : x
  2. Step 2: Convert to fraction form
    74,755.15/103,177.71 = 72,385.09/x
  3. Step 3: Cross multiply
    74,755.15x = 103,177.71 × 72,385.09
  4. Step 4: Simplify right side
    74,755.15x = 7,468,527,824.34
  5. Step 5: Solve for x
    x = 7,468,527,824.34/74,755.15
  6. Step 6: Final answer
    x = 99,906.53

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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.