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Finding the Fourth Proportional to 123,112.63, 169,885.22 and 69,410.85

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Solution

The fourth proportional to 123,112.63, 169,885.22 and 69,410.85 is: 95,781.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,112.63 : 169,885.22 = 69,410.85 : x
  2. Step 2: Convert to fraction form
    123,112.63/169,885.22 = 69,410.85/x
  3. Step 3: Cross multiply
    123,112.63x = 169,885.22 × 69,410.85
  4. Step 4: Simplify right side
    123,112.63x = 11,791,877,522.64
  5. Step 5: Solve for x
    x = 11,791,877,522.64/123,112.63
  6. Step 6: Final answer
    x = 95,781.22

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1.5x scale

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.