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Finding the Fourth Proportional to 139,595.86, 192,643.78 and 75,933.81

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Solution

The fourth proportional to 139,595.86, 192,643.78 and 75,933.81 is: 104,789.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,595.86 : 192,643.78 = 75,933.81 : x
  2. Step 2: Convert to fraction form
    139,595.86/192,643.78 = 75,933.81/x
  3. Step 3: Cross multiply
    139,595.86x = 192,643.78 × 75,933.81
  4. Step 4: Simplify right side
    139,595.86x = 14,628,176,188.20
  5. Step 5: Solve for x
    x = 14,628,176,188.20/139,595.86
  6. Step 6: Final answer
    x = 104,789.47

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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.