Home / 206,870.21-310,355.31-71,914.79

Finding the Fourth Proportional to 206,870.21, 310,355.31 and 71,914.79

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Solution

The fourth proportional to 206,870.21, 310,355.31 and 71,914.79 is: 107,889.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,870.21 : 310,355.31 = 71,914.79 : x
  2. Step 2: Convert to fraction form
    206,870.21/310,355.31 = 71,914.79/x
  3. Step 3: Cross multiply
    206,870.21x = 310,355.31 × 71,914.79
  4. Step 4: Simplify right side
    206,870.21x = 22,319,136,944.03
  5. Step 5: Solve for x
    x = 22,319,136,944.03/206,870.21
  6. Step 6: Final answer
    x = 107,889.56

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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.