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Finding the Fourth Proportional to 112,967.64, 155,879.13 and 67,634.76

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Solution

The fourth proportional to 112,967.64, 155,879.13 and 67,634.76 is: 93,326.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,967.64 : 155,879.13 = 67,634.76 : x
  2. Step 2: Convert to fraction form
    112,967.64/155,879.13 = 67,634.76/x
  3. Step 3: Cross multiply
    112,967.64x = 155,879.13 × 67,634.76
  4. Step 4: Simplify right side
    112,967.64x = 10,542,847,546.56
  5. Step 5: Solve for x
    x = 10,542,847,546.56/112,967.64
  6. Step 6: Final answer
    x = 93,326.26

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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.