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Finding the Fourth Proportional to 139,596.09, 192,641.74 and 75,934.14

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Solution

The fourth proportional to 139,596.09, 192,641.74 and 75,934.14 is: 104,788.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,596.09 : 192,641.74 = 75,934.14 : x
  2. Step 2: Convert to fraction form
    139,596.09/192,641.74 = 75,934.14/x
  3. Step 3: Cross multiply
    139,596.09x = 192,641.74 × 75,934.14
  4. Step 4: Simplify right side
    139,596.09x = 14,628,084,665.17
  5. Step 5: Solve for x
    x = 14,628,084,665.17/139,596.09
  6. Step 6: Final answer
    x = 104,788.64

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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.