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Finding the Fourth Proportional to 122,279.88, 168,776.24 and 74,559.52

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Solution

The fourth proportional to 122,279.88, 168,776.24 and 74,559.52 is: 102,910.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,279.88 : 168,776.24 = 74,559.52 : x
  2. Step 2: Convert to fraction form
    122,279.88/168,776.24 = 74,559.52/x
  3. Step 3: Cross multiply
    122,279.88x = 168,776.24 × 74,559.52
  4. Step 4: Simplify right side
    122,279.88x = 12,583,875,441.80
  5. Step 5: Solve for x
    x = 12,583,875,441.80/122,279.88
  6. Step 6: Final answer
    x = 102,910.43

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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.