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Finding the Fourth Proportional to 122,099.58, 168,579.71 and 76,229.14

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Solution

The fourth proportional to 122,099.58, 168,579.71 and 76,229.14 is: 105,247.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,099.58 : 168,579.71 = 76,229.14 : x
  2. Step 2: Convert to fraction form
    122,099.58/168,579.71 = 76,229.14/x
  3. Step 3: Cross multiply
    122,099.58x = 168,579.71 × 76,229.14
  4. Step 4: Simplify right side
    122,099.58x = 12,850,686,145.03
  5. Step 5: Solve for x
    x = 12,850,686,145.03/122,099.58
  6. Step 6: Final answer
    x = 105,247.58

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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.