Home / 205,115.12-307,708.79-70,147.46

Finding the Fourth Proportional to 205,115.12, 307,708.79 and 70,147.46

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Solution

The fourth proportional to 205,115.12, 307,708.79 and 70,147.46 is: 105,233.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,115.12 : 307,708.79 = 70,147.46 : x
  2. Step 2: Convert to fraction form
    205,115.12/307,708.79 = 70,147.46/x
  3. Step 3: Cross multiply
    205,115.12x = 307,708.79 × 70,147.46
  4. Step 4: Simplify right side
    205,115.12x = 21,584,988,148.89
  5. Step 5: Solve for x
    x = 21,584,988,148.89/205,115.12
  6. Step 6: Final answer
    x = 105,233.53

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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.