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Finding the Fourth Proportional to 122,808, 169,475.04 and 69,816

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Solution

The fourth proportional to 122,808, 169,475.04 and 69,816 is: 96,346.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,808 : 169,475.04 = 69,816 : x
  2. Step 2: Convert to fraction form
    122,808/169,475.04 = 69,816/x
  3. Step 3: Cross multiply
    122,808x = 169,475.04 × 69,816
  4. Step 4: Simplify right side
    122,808x = 11,832,069,392.64
  5. Step 5: Solve for x
    x = 11,832,069,392.64/122,808
  6. Step 6: Final answer
    x = 96,346.08

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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.