Home / 138,947.60-191,747.86-75,285.38

Finding the Fourth Proportional to 138,947.60, 191,747.86 and 75,285.38

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Solution

The fourth proportional to 138,947.60, 191,747.86 and 75,285.38 is: 103,893.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,947.60 : 191,747.86 = 75,285.38 : x
  2. Step 2: Convert to fraction form
    138,947.60/191,747.86 = 75,285.38/x
  3. Step 3: Cross multiply
    138,947.60x = 191,747.86 × 75,285.38
  4. Step 4: Simplify right side
    138,947.60x = 14,435,810,504.29
  5. Step 5: Solve for x
    x = 14,435,810,504.29/138,947.60
  6. Step 6: Final answer
    x = 103,893.92

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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.