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Finding the Fourth Proportional to 122,863.98, 169,534.01 and 69,145.80

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Solution

The fourth proportional to 122,863.98, 169,534.01 and 69,145.80 is: 95,410.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,863.98 : 169,534.01 = 69,145.80 : x
  2. Step 2: Convert to fraction form
    122,863.98/169,534.01 = 69,145.80/x
  3. Step 3: Cross multiply
    122,863.98x = 169,534.01 × 69,145.80
  4. Step 4: Simplify right side
    122,863.98x = 11,722,564,748.66
  5. Step 5: Solve for x
    x = 11,722,564,748.66/122,863.98
  6. Step 6: Final answer
    x = 95,410.91

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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.