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Finding the Fourth Proportional to 122,335.32, 168,858.54 and 79,900.32

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Solution

The fourth proportional to 122,335.32, 168,858.54 and 79,900.32 is: 110,285.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,335.32 : 168,858.54 = 79,900.32 : x
  2. Step 2: Convert to fraction form
    122,335.32/168,858.54 = 79,900.32/x
  3. Step 3: Cross multiply
    122,335.32x = 168,858.54 × 79,900.32
  4. Step 4: Simplify right side
    122,335.32x = 13,491,851,380.73
  5. Step 5: Solve for x
    x = 13,491,851,380.73/122,335.32
  6. Step 6: Final answer
    x = 110,285.82

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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.