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Finding the Fourth Proportional to 122,842, 169,522.64 and 69,127.92

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Solution

The fourth proportional to 122,842, 169,522.64 and 69,127.92 is: 95,396.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,842 : 169,522.64 = 69,127.92 : x
  2. Step 2: Convert to fraction form
    122,842/169,522.64 = 69,127.92/x
  3. Step 3: Cross multiply
    122,842x = 169,522.64 × 69,127.92
  4. Step 4: Simplify right side
    122,842x = 11,718,747,496.11
  5. Step 5: Solve for x
    x = 11,718,747,496.11/122,842
  6. Step 6: Final answer
    x = 95,396.91

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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.