Home / 209,853.60-314,853.30-91,609.80

Finding the Fourth Proportional to 209,853.60, 314,853.30 and 91,609.80

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Solution

The fourth proportional to 209,853.60, 314,853.30 and 91,609.80 is: 137,446.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,853.60 : 314,853.30 = 91,609.80 : x
  2. Step 2: Convert to fraction form
    209,853.60/314,853.30 = 91,609.80/x
  3. Step 3: Cross multiply
    209,853.60x = 314,853.30 × 91,609.80
  4. Step 4: Simplify right side
    209,853.60x = 28,843,647,842.34
  5. Step 5: Solve for x
    x = 28,843,647,842.34/209,853.60
  6. Step 6: Final answer
    x = 137,446.52

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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.