Home / 139,790.10-192,918.44-105,273.02

Finding the Fourth Proportional to 139,790.10, 192,918.44 and 105,273.02

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Solution

The fourth proportional to 139,790.10, 192,918.44 and 105,273.02 is: 145,282.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,790.10 : 192,918.44 = 105,273.02 : x
  2. Step 2: Convert to fraction form
    139,790.10/192,918.44 = 105,273.02/x
  3. Step 3: Cross multiply
    139,790.10x = 192,918.44 × 105,273.02
  4. Step 4: Simplify right side
    139,790.10x = 20,309,106,792.49
  5. Step 5: Solve for x
    x = 20,309,106,792.49/139,790.10
  6. Step 6: Final answer
    x = 145,282.87

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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.