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Finding the Fourth Proportional to 123,058.16, 169,820.32 and 66,469.53

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Solution

The fourth proportional to 123,058.16, 169,820.32 and 66,469.53 is: 91,727.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,058.16 : 169,820.32 = 66,469.53 : x
  2. Step 2: Convert to fraction form
    123,058.16/169,820.32 = 66,469.53/x
  3. Step 3: Cross multiply
    123,058.16x = 169,820.32 × 66,469.53
  4. Step 4: Simplify right side
    123,058.16x = 11,287,877,445.57
  5. Step 5: Solve for x
    x = 11,287,877,445.57/123,058.16
  6. Step 6: Final answer
    x = 91,727.99

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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.