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Finding the Fourth Proportional to 122,999.90, 169,734.62 and 68,549.18

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Solution

The fourth proportional to 122,999.90, 169,734.62 and 68,549.18 is: 94,594.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,999.90 : 169,734.62 = 68,549.18 : x
  2. Step 2: Convert to fraction form
    122,999.90/169,734.62 = 68,549.18/x
  3. Step 3: Cross multiply
    122,999.90x = 169,734.62 × 68,549.18
  4. Step 4: Simplify right side
    122,999.90x = 11,635,167,827.19
  5. Step 5: Solve for x
    x = 11,635,167,827.19/122,999.90
  6. Step 6: Final answer
    x = 94,594.94

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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.