Home / 213,432.11-320,160.69-80,313.52

Finding the Fourth Proportional to 213,432.11, 320,160.69 and 80,313.52

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Solution

The fourth proportional to 213,432.11, 320,160.69 and 80,313.52 is: 120,474.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,432.11 : 320,160.69 = 80,313.52 : x
  2. Step 2: Convert to fraction form
    213,432.11/320,160.69 = 80,313.52/x
  3. Step 3: Cross multiply
    213,432.11x = 320,160.69 × 80,313.52
  4. Step 4: Simplify right side
    213,432.11x = 25,713,229,977.16
  5. Step 5: Solve for x
    x = 25,713,229,977.16/213,432.11
  6. Step 6: Final answer
    x = 120,474.98

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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.