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Finding the Fourth Proportional to 122,644.10, 169,254.88 and 74,889.74

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Solution

The fourth proportional to 122,644.10, 169,254.88 and 74,889.74 is: 103,351.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,644.10 : 169,254.88 = 74,889.74 : x
  2. Step 2: Convert to fraction form
    122,644.10/169,254.88 = 74,889.74/x
  3. Step 3: Cross multiply
    122,644.10x = 169,254.88 × 74,889.74
  4. Step 4: Simplify right side
    122,644.10x = 12,675,452,923.43
  5. Step 5: Solve for x
    x = 12,675,452,923.43/122,644.10
  6. Step 6: Final answer
    x = 103,351.51

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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.