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Finding the Fourth Proportional to 139,249.78, 192,164.94 and 75,587.62

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Solution

The fourth proportional to 139,249.78, 192,164.94 and 75,587.62 is: 104,311.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,249.78 : 192,164.94 = 75,587.62 : x
  2. Step 2: Convert to fraction form
    139,249.78/192,164.94 = 75,587.62/x
  3. Step 3: Cross multiply
    139,249.78x = 192,164.94 × 75,587.62
  4. Step 4: Simplify right side
    139,249.78x = 14,525,290,462.04
  5. Step 5: Solve for x
    x = 14,525,290,462.04/139,249.78
  6. Step 6: Final answer
    x = 104,311.05

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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.