Home / 213,895.04-320,615.32-80,718.88

Finding the Fourth Proportional to 213,895.04, 320,615.32 and 80,718.88

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Solution

The fourth proportional to 213,895.04, 320,615.32 and 80,718.88 is: 120,992.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,895.04 : 320,615.32 = 80,718.88 : x
  2. Step 2: Convert to fraction form
    213,895.04/320,615.32 = 80,718.88/x
  3. Step 3: Cross multiply
    213,895.04x = 320,615.32 × 80,718.88
  4. Step 4: Simplify right side
    213,895.04x = 25,879,709,541.24
  5. Step 5: Solve for x
    x = 25,879,709,541.24/213,895.04
  6. Step 6: Final answer
    x = 120,992.57

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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.