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Finding the Fourth Proportional to 110,893.45, 152,979.61 and 72,636.44

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Solution

The fourth proportional to 110,893.45, 152,979.61 and 72,636.44 is: 100,203.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,893.45 : 152,979.61 = 72,636.44 : x
  2. Step 2: Convert to fraction form
    110,893.45/152,979.61 = 72,636.44/x
  3. Step 3: Cross multiply
    110,893.45x = 152,979.61 × 72,636.44
  4. Step 4: Simplify right side
    110,893.45x = 11,111,893,880.54
  5. Step 5: Solve for x
    x = 11,111,893,880.54/110,893.45
  6. Step 6: Final answer
    x = 100,203.34

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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.