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Finding the Fourth Proportional to 123,070.34, 169,837.16 and 66,481.71

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Solution

The fourth proportional to 123,070.34, 169,837.16 and 66,481.71 is: 91,744.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,070.34 : 169,837.16 = 66,481.71 : x
  2. Step 2: Convert to fraction form
    123,070.34/169,837.16 = 66,481.71/x
  3. Step 3: Cross multiply
    123,070.34x = 169,837.16 × 66,481.71
  4. Step 4: Simplify right side
    123,070.34x = 11,291,064,485.94
  5. Step 5: Solve for x
    x = 11,291,064,485.94/123,070.34
  6. Step 6: Final answer
    x = 91,744.81

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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.