Home / 121,018,420.80-181,504,011.60-40,239,388.80

Finding the Fourth Proportional to 121,018,420.80, 181,504,011.60 and 40,239,388.80

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Solution

The fourth proportional to 121,018,420.80, 181,504,011.60 and 40,239,388.80 is: 60,351,229.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,018,420.80 : 181,504,011.60 = 40,239,388.80 : x
  2. Step 2: Convert to fraction form
    121,018,420.80/181,504,011.60 = 40,239,388.80/x
  3. Step 3: Cross multiply
    121,018,420.80x = 181,504,011.60 × 40,239,388.80
  4. Step 4: Simplify right side
    121,018,420.80x = 7,303,610,491,532,109
  5. Step 5: Solve for x
    x = 7,303,610,491,532,109/121,018,420.80
  6. Step 6: Final answer
    x = 60,351,229.53

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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.