Home / 138,212.58-207,295.75-38,382.87

Finding the Fourth Proportional to 138,212.58, 207,295.75 and 38,382.87

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Solution

The fourth proportional to 138,212.58, 207,295.75 and 38,382.87 is: 57,567.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,212.58 : 207,295.75 = 38,382.87 : x
  2. Step 2: Convert to fraction form
    138,212.58/207,295.75 = 38,382.87/x
  3. Step 3: Cross multiply
    138,212.58x = 207,295.75 × 38,382.87
  4. Step 4: Simplify right side
    138,212.58x = 7,956,604,595.41
  5. Step 5: Solve for x
    x = 7,956,604,595.41/138,212.58
  6. Step 6: Final answer
    x = 57,567.88

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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.