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Finding the Fourth Proportional to 112,571.88, 168,736.32 and 73,157.28

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Solution

The fourth proportional to 112,571.88, 168,736.32 and 73,157.28 is: 109,656.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,571.88 : 168,736.32 = 73,157.28 : x
  2. Step 2: Convert to fraction form
    112,571.88/168,736.32 = 73,157.28/x
  3. Step 3: Cross multiply
    112,571.88x = 168,736.32 × 73,157.28
  4. Step 4: Simplify right side
    112,571.88x = 12,344,290,208.41
  5. Step 5: Solve for x
    x = 12,344,290,208.41/112,571.88
  6. Step 6: Final answer
    x = 109,656.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.