Home / 117,975.15-162,835.17-72,691.98

Finding the Fourth Proportional to 117,975.15, 162,835.17 and 72,691.98

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Solution

The fourth proportional to 117,975.15, 162,835.17 and 72,691.98 is: 100,333.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,975.15 : 162,835.17 = 72,691.98 : x
  2. Step 2: Convert to fraction form
    117,975.15/162,835.17 = 72,691.98/x
  3. Step 3: Cross multiply
    117,975.15x = 162,835.17 × 72,691.98
  4. Step 4: Simplify right side
    117,975.15x = 11,836,810,920.94
  5. Step 5: Solve for x
    x = 11,836,810,920.94/117,975.15
  6. Step 6: Final answer
    x = 100,333.09

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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.