Home / 138,112.36-207,167.95-38,272.25

Finding the Fourth Proportional to 138,112.36, 207,167.95 and 38,272.25

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Solution

The fourth proportional to 138,112.36, 207,167.95 and 38,272.25 is: 57,408.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,112.36 : 207,167.95 = 38,272.25 : x
  2. Step 2: Convert to fraction form
    138,112.36/207,167.95 = 38,272.25/x
  3. Step 3: Cross multiply
    138,112.36x = 207,167.95 × 38,272.25
  4. Step 4: Simplify right side
    138,112.36x = 7,928,783,574.39
  5. Step 5: Solve for x
    x = 7,928,783,574.39/138,112.36
  6. Step 6: Final answer
    x = 57,408.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.