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Finding the Fourth Proportional to 188,391.69, 259,965.45 and 107,800.74

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Solution

The fourth proportional to 188,391.69, 259,965.45 and 107,800.74 is: 148,756.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,391.69 : 259,965.45 = 107,800.74 : x
  2. Step 2: Convert to fraction form
    188,391.69/259,965.45 = 107,800.74/x
  3. Step 3: Cross multiply
    188,391.69x = 259,965.45 × 107,800.74
  4. Step 4: Simplify right side
    188,391.69x = 28,024,467,884.43
  5. Step 5: Solve for x
    x = 28,024,467,884.43/188,391.69
  6. Step 6: Final answer
    x = 148,756.39

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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.