Home / 213,427.12-320,140.68-73,186.96

Finding the Fourth Proportional to 213,427.12, 320,140.68 and 73,186.96

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Solution

The fourth proportional to 213,427.12, 320,140.68 and 73,186.96 is: 109,780.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,427.12 : 320,140.68 = 73,186.96 : x
  2. Step 2: Convert to fraction form
    213,427.12/320,140.68 = 73,186.96/x
  3. Step 3: Cross multiply
    213,427.12x = 320,140.68 × 73,186.96
  4. Step 4: Simplify right side
    213,427.12x = 23,430,123,141.53
  5. Step 5: Solve for x
    x = 23,430,123,141.53/213,427.12
  6. Step 6: Final answer
    x = 109,780.44

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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.