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Finding the Fourth Proportional to 122,736.58, 169,356.71 and 69,018.39

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Solution

The fourth proportional to 122,736.58, 169,356.71 and 69,018.39 is: 95,234.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,736.58 : 169,356.71 = 69,018.39 : x
  2. Step 2: Convert to fraction form
    122,736.58/169,356.71 = 69,018.39/x
  3. Step 3: Cross multiply
    122,736.58x = 169,356.71 × 69,018.39
  4. Step 4: Simplify right side
    122,736.58x = 11,688,727,632.44
  5. Step 5: Solve for x
    x = 11,688,727,632.44/122,736.58
  6. Step 6: Final answer
    x = 95,234.26

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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.