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Finding the Fourth Proportional to 117,640.83, 162,350.57 and 66,663.45

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Solution

The fourth proportional to 117,640.83, 162,350.57 and 66,663.45 is: 91,999.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,640.83 : 162,350.57 = 66,663.45 : x
  2. Step 2: Convert to fraction form
    117,640.83/162,350.57 = 66,663.45/x
  3. Step 3: Cross multiply
    117,640.83x = 162,350.57 × 66,663.45
  4. Step 4: Simplify right side
    117,640.83x = 10,822,849,272.33
  5. Step 5: Solve for x
    x = 10,822,849,272.33/117,640.83
  6. Step 6: Final answer
    x = 91,999.09

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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.