Home / 80,369.24-120,542.02-21,209.07

Finding the Fourth Proportional to 80,369.24, 120,542.02 and 21,209.07

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Solution

The fourth proportional to 80,369.24, 120,542.02 and 21,209.07 is: 31,810.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,369.24 : 120,542.02 = 21,209.07 : x
  2. Step 2: Convert to fraction form
    80,369.24/120,542.02 = 21,209.07/x
  3. Step 3: Cross multiply
    80,369.24x = 120,542.02 × 21,209.07
  4. Step 4: Simplify right side
    80,369.24x = 2,556,584,140.12
  5. Step 5: Solve for x
    x = 2,556,584,140.12/80,369.24
  6. Step 6: Final answer
    x = 31,810.48

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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.