Home / 213,823.80-320,806.96-71,683.13

Finding the Fourth Proportional to 213,823.80, 320,806.96 and 71,683.13

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Solution

The fourth proportional to 213,823.80, 320,806.96 and 71,683.13 is: 107,548.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,823.80 : 320,806.96 = 71,683.13 : x
  2. Step 2: Convert to fraction form
    213,823.80/320,806.96 = 71,683.13/x
  3. Step 3: Cross multiply
    213,823.80x = 320,806.96 × 71,683.13
  4. Step 4: Simplify right side
    213,823.80x = 22,996,447,641.39
  5. Step 5: Solve for x
    x = 22,996,447,641.39/213,823.80
  6. Step 6: Final answer
    x = 107,548.59

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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.