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Finding the Fourth Proportional to 122,776, 169,439.44 and 69,066.16

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Solution

The fourth proportional to 122,776, 169,439.44 and 69,066.16 is: 95,316.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,776 : 169,439.44 = 69,066.16 : x
  2. Step 2: Convert to fraction form
    122,776/169,439.44 = 69,066.16/x
  3. Step 3: Cross multiply
    122,776x = 169,439.44 × 69,066.16
  4. Step 4: Simplify right side
    122,776x = 11,702,531,473.35
  5. Step 5: Solve for x
    x = 11,702,531,473.35/122,776
  6. Step 6: Final answer
    x = 95,316.12

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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.