Home / 138,148.16-207,222.26-38,308.37

Finding the Fourth Proportional to 138,148.16, 207,222.26 and 38,308.37

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Solution

The fourth proportional to 138,148.16, 207,222.26 and 38,308.37 is: 57,462.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,148.16 : 207,222.26 = 38,308.37 : x
  2. Step 2: Convert to fraction form
    138,148.16/207,222.26 = 38,308.37/x
  3. Step 3: Cross multiply
    138,148.16x = 207,222.26 × 38,308.37
  4. Step 4: Simplify right side
    138,148.16x = 7,938,345,780.66
  5. Step 5: Solve for x
    x = 7,938,345,780.66/138,148.16
  6. Step 6: Final answer
    x = 57,462.55

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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.