Home / 138,945.60-191,745.09-75,283.38

Finding the Fourth Proportional to 138,945.60, 191,745.09 and 75,283.38

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Solution

The fourth proportional to 138,945.60, 191,745.09 and 75,283.38 is: 103,891.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,945.60 : 191,745.09 = 75,283.38 : x
  2. Step 2: Convert to fraction form
    138,945.60/191,745.09 = 75,283.38/x
  3. Step 3: Cross multiply
    138,945.60x = 191,745.09 × 75,283.38
  4. Step 4: Simplify right side
    138,945.60x = 14,435,218,473.60
  5. Step 5: Solve for x
    x = 14,435,218,473.60/138,945.60
  6. Step 6: Final answer
    x = 103,891.15

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1.5x scale

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.