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Finding the Fourth Proportional to 117,663.13, 162,372.30 and 65,976.78

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Solution

The fourth proportional to 117,663.13, 162,372.30 and 65,976.78 is: 91,046.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,663.13 : 162,372.30 = 65,976.78 : x
  2. Step 2: Convert to fraction form
    117,663.13/162,372.30 = 65,976.78/x
  3. Step 3: Cross multiply
    117,663.13x = 162,372.30 × 65,976.78
  4. Step 4: Simplify right side
    117,663.13x = 10,712,801,515.19
  5. Step 5: Solve for x
    x = 10,712,801,515.19/117,663.13
  6. Step 6: Final answer
    x = 91,046.38

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1.5x scale

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.