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Finding the Fourth Proportional to 122,845, 169,526.78 and 69,130.92

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Solution

The fourth proportional to 122,845, 169,526.78 and 69,130.92 is: 95,401.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,845 : 169,526.78 = 69,130.92 : x
  2. Step 2: Convert to fraction form
    122,845/169,526.78 = 69,130.92/x
  3. Step 3: Cross multiply
    122,845x = 169,526.78 × 69,130.92
  4. Step 4: Simplify right side
    122,845x = 11,719,542,266.04
  5. Step 5: Solve for x
    x = 11,719,542,266.04/122,845
  6. Step 6: Final answer
    x = 95,401.05

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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.