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Finding the Fourth Proportional to 188,363.34, 259,940.34 and 103,478.58

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Solution

The fourth proportional to 188,363.34, 259,940.34 and 103,478.58 is: 142,799.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,363.34 : 259,940.34 = 103,478.58 : x
  2. Step 2: Convert to fraction form
    188,363.34/259,940.34 = 103,478.58/x
  3. Step 3: Cross multiply
    188,363.34x = 259,940.34 × 103,478.58
  4. Step 4: Simplify right side
    188,363.34x = 26,898,257,267.92
  5. Step 5: Solve for x
    x = 26,898,257,267.92/188,363.34
  6. Step 6: Final answer
    x = 142,799.85

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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.