Home / 139,629.21-192,689.14-75,967.46

Finding the Fourth Proportional to 139,629.21, 192,689.14 and 75,967.46

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Solution

The fourth proportional to 139,629.21, 192,689.14 and 75,967.46 is: 104,835.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,629.21 : 192,689.14 = 75,967.46 : x
  2. Step 2: Convert to fraction form
    139,629.21/192,689.14 = 75,967.46/x
  3. Step 3: Cross multiply
    139,629.21x = 192,689.14 × 75,967.46
  4. Step 4: Simplify right side
    139,629.21x = 14,638,104,535.38
  5. Step 5: Solve for x
    x = 14,638,104,535.38/139,629.21
  6. Step 6: Final answer
    x = 104,835.55

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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.