Home / 138,521.75-207,684.14-71,074.13

Finding the Fourth Proportional to 138,521.75, 207,684.14 and 71,074.13

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Solution

The fourth proportional to 138,521.75, 207,684.14 and 71,074.13 is: 106,560.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,521.75 : 207,684.14 = 71,074.13 : x
  2. Step 2: Convert to fraction form
    138,521.75/207,684.14 = 71,074.13/x
  3. Step 3: Cross multiply
    138,521.75x = 207,684.14 × 71,074.13
  4. Step 4: Simplify right side
    138,521.75x = 14,760,968,171.51
  5. Step 5: Solve for x
    x = 14,760,968,171.51/138,521.75
  6. Step 6: Final answer
    x = 106,560.66

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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.