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Finding the Fourth Proportional to 122,402.43, 168,932.14 and 68,690.62

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Solution

The fourth proportional to 122,402.43, 168,932.14 and 68,690.62 is: 94,802.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,402.43 : 168,932.14 = 68,690.62 : x
  2. Step 2: Convert to fraction form
    122,402.43/168,932.14 = 68,690.62/x
  3. Step 3: Cross multiply
    122,402.43x = 168,932.14 × 68,690.62
  4. Step 4: Simplify right side
    122,402.43x = 11,604,052,840.47
  5. Step 5: Solve for x
    x = 11,604,052,840.47/122,402.43
  6. Step 6: Final answer
    x = 94,802.47

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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.