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Finding the Fourth Proportional to 123,167.67, 169,971.53 and 66,579

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Solution

The fourth proportional to 123,167.67, 169,971.53 and 66,579 is: 91,879.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,167.67 : 169,971.53 = 66,579 : x
  2. Step 2: Convert to fraction form
    123,167.67/169,971.53 = 66,579/x
  3. Step 3: Cross multiply
    123,167.67x = 169,971.53 × 66,579
  4. Step 4: Simplify right side
    123,167.67x = 11,316,534,162.98
  5. Step 5: Solve for x
    x = 11,316,534,162.98/123,167.67
  6. Step 6: Final answer
    x = 91,879.10

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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.