Home / 213,431.61-320,159.94-80,313.02

Finding the Fourth Proportional to 213,431.61, 320,159.94 and 80,313.02

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Solution

The fourth proportional to 213,431.61, 320,159.94 and 80,313.02 is: 120,474.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,431.61 : 320,159.94 = 80,313.02 : x
  2. Step 2: Convert to fraction form
    213,431.61/320,159.94 = 80,313.02/x
  3. Step 3: Cross multiply
    213,431.61x = 320,159.94 × 80,313.02
  4. Step 4: Simplify right side
    213,431.61x = 25,713,009,662.05
  5. Step 5: Solve for x
    x = 25,713,009,662.05/213,431.61
  6. Step 6: Final answer
    x = 120,474.23

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1.5x scale

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.