Home / 138,111.86-207,167.19-38,271.75

Finding the Fourth Proportional to 138,111.86, 207,167.19 and 38,271.75

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Solution

The fourth proportional to 138,111.86, 207,167.19 and 38,271.75 is: 57,407.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,111.86 : 207,167.19 = 38,271.75 : x
  2. Step 2: Convert to fraction form
    138,111.86/207,167.19 = 38,271.75/x
  3. Step 3: Cross multiply
    138,111.86x = 207,167.19 × 38,271.75
  4. Step 4: Simplify right side
    138,111.86x = 7,928,650,903.88
  5. Step 5: Solve for x
    x = 7,928,650,903.88/138,111.86
  6. Step 6: Final answer
    x = 57,407.46

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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.