Home / 139,629.78-192,691.07-75,967.63

Finding the Fourth Proportional to 139,629.78, 192,691.07 and 75,967.63

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Solution

The fourth proportional to 139,629.78, 192,691.07 and 75,967.63 is: 104,836.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,629.78 : 192,691.07 = 75,967.63 : x
  2. Step 2: Convert to fraction form
    139,629.78/192,691.07 = 75,967.63/x
  3. Step 3: Cross multiply
    139,629.78x = 192,691.07 × 75,967.63
  4. Step 4: Simplify right side
    139,629.78x = 14,638,283,333.38
  5. Step 5: Solve for x
    x = 14,638,283,333.38/139,629.78
  6. Step 6: Final answer
    x = 104,836.40

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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.