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Finding the Fourth Proportional to 122,969.40, 169,696.08 and 69,259.74

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Solution

The fourth proportional to 122,969.40, 169,696.08 and 69,259.74 is: 95,577.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,969.40 : 169,696.08 = 69,259.74 : x
  2. Step 2: Convert to fraction form
    122,969.40/169,696.08 = 69,259.74/x
  3. Step 3: Cross multiply
    122,969.40x = 169,696.08 × 69,259.74
  4. Step 4: Simplify right side
    122,969.40x = 11,753,106,379.82
  5. Step 5: Solve for x
    x = 11,753,106,379.82/122,969.40
  6. Step 6: Final answer
    x = 95,577.49

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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.