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Finding the Fourth Proportional to 117,689.46, 162,374.13 and 73,003.38

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Solution

The fourth proportional to 117,689.46, 162,374.13 and 73,003.38 is: 100,721.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,689.46 : 162,374.13 = 73,003.38 : x
  2. Step 2: Convert to fraction form
    117,689.46/162,374.13 = 73,003.38/x
  3. Step 3: Cross multiply
    117,689.46x = 162,374.13 × 73,003.38
  4. Step 4: Simplify right side
    117,689.46x = 11,853,860,314.56
  5. Step 5: Solve for x
    x = 11,853,860,314.56/117,689.46
  6. Step 6: Final answer
    x = 100,721.51

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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.