Home / 137,947.76-190,342.81-103,945.38

Finding the Fourth Proportional to 137,947.76, 190,342.81 and 103,945.38

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Solution

The fourth proportional to 137,947.76, 190,342.81 and 103,945.38 is: 143,425.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,947.76 : 190,342.81 = 103,945.38 : x
  2. Step 2: Convert to fraction form
    137,947.76/190,342.81 = 103,945.38/x
  3. Step 3: Cross multiply
    137,947.76x = 190,342.81 × 103,945.38
  4. Step 4: Simplify right side
    137,947.76x = 19,785,255,131.86
  5. Step 5: Solve for x
    x = 19,785,255,131.86/137,947.76
  6. Step 6: Final answer
    x = 143,425.71

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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.