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Finding the Fourth Proportional to 122,479.08, 169,008.04 and 68,770

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Solution

The fourth proportional to 122,479.08, 169,008.04 and 68,770 is: 94,895.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,479.08 : 169,008.04 = 68,770 : x
  2. Step 2: Convert to fraction form
    122,479.08/169,008.04 = 68,770/x
  3. Step 3: Cross multiply
    122,479.08x = 169,008.04 × 68,770
  4. Step 4: Simplify right side
    122,479.08x = 11,622,682,910.80
  5. Step 5: Solve for x
    x = 11,622,682,910.80/122,479.08
  6. Step 6: Final answer
    x = 94,895.25

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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.