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Finding the Fourth Proportional to 122,920.68, 169,446.24 and 100,224.84

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Solution

The fourth proportional to 122,920.68, 169,446.24 and 100,224.84 is: 138,160.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,920.68 : 169,446.24 = 100,224.84 : x
  2. Step 2: Convert to fraction form
    122,920.68/169,446.24 = 100,224.84/x
  3. Step 3: Cross multiply
    122,920.68x = 169,446.24 × 100,224.84
  4. Step 4: Simplify right side
    122,920.68x = 16,982,722,292.60
  5. Step 5: Solve for x
    x = 16,982,722,292.60/122,920.68
  6. Step 6: Final answer
    x = 138,160.01

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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.