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Finding the Fourth Proportional to 122,970.22, 169,697.23 and 69,255.88

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Solution

The fourth proportional to 122,970.22, 169,697.23 and 69,255.88 is: 95,572.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,970.22 : 169,697.23 = 69,255.88 : x
  2. Step 2: Convert to fraction form
    122,970.22/169,697.23 = 69,255.88/x
  3. Step 3: Cross multiply
    122,970.22x = 169,697.23 × 69,255.88
  4. Step 4: Simplify right side
    122,970.22x = 11,752,530,997.21
  5. Step 5: Solve for x
    x = 11,752,530,997.21/122,970.22
  6. Step 6: Final answer
    x = 95,572.17

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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.