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Finding the Fourth Proportional to 117,911.97, 162,816.48 and 109,364.49

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Solution

The fourth proportional to 117,911.97, 162,816.48 and 109,364.49 is: 151,013.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,911.97 : 162,816.48 = 109,364.49 : x
  2. Step 2: Convert to fraction form
    117,911.97/162,816.48 = 109,364.49/x
  3. Step 3: Cross multiply
    117,911.97x = 162,816.48 × 109,364.49
  4. Step 4: Simplify right side
    117,911.97x = 17,806,341,298.80
  5. Step 5: Solve for x
    x = 17,806,341,298.80/117,911.97
  6. Step 6: Final answer
    x = 151,013.86

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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.