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Finding the Fourth Proportional to 117,754.97, 162,418.30 and 72,373.37

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Solution

The fourth proportional to 117,754.97, 162,418.30 and 72,373.37 is: 99,823.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,754.97 : 162,418.30 = 72,373.37 : x
  2. Step 2: Convert to fraction form
    117,754.97/162,418.30 = 72,373.37/x
  3. Step 3: Cross multiply
    117,754.97x = 162,418.30 × 72,373.37
  4. Step 4: Simplify right side
    117,754.97x = 11,754,759,720.67
  5. Step 5: Solve for x
    x = 11,754,759,720.67/117,754.97
  6. Step 6: Final answer
    x = 99,823.89

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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.