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Finding the Fourth Proportional to 120,628.40, 181,007.40 and 50,514.80

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Solution

The fourth proportional to 120,628.40, 181,007.40 and 50,514.80 is: 75,799.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,628.40 : 181,007.40 = 50,514.80 : x
  2. Step 2: Convert to fraction form
    120,628.40/181,007.40 = 50,514.80/x
  3. Step 3: Cross multiply
    120,628.40x = 181,007.40 × 50,514.80
  4. Step 4: Simplify right side
    120,628.40x = 9,143,552,609.52
  5. Step 5: Solve for x
    x = 9,143,552,609.52/120,628.40
  6. Step 6: Final answer
    x = 75,799.34

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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.