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Finding the Fourth Proportional to 120,718.40, 181,142.40 and 50,604.80

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Solution

The fourth proportional to 120,718.40, 181,142.40 and 50,604.80 is: 75,934.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,718.40 : 181,142.40 = 50,604.80 : x
  2. Step 2: Convert to fraction form
    120,718.40/181,142.40 = 50,604.80/x
  3. Step 3: Cross multiply
    120,718.40x = 181,142.40 × 50,604.80
  4. Step 4: Simplify right side
    120,718.40x = 9,166,674,923.52
  5. Step 5: Solve for x
    x = 9,166,674,923.52/120,718.40
  6. Step 6: Final answer
    x = 75,934.36

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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.