Home / 144,146,499.21-198,921,183.06-78,065,477.73

Finding the Fourth Proportional to 144,146,499.21, 198,921,183.06 and 78,065,477.73

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Solution

The fourth proportional to 144,146,499.21, 198,921,183.06 and 78,065,477.73 is: 107,729,825.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,146,499.21 : 198,921,183.06 = 78,065,477.73 : x
  2. Step 2: Convert to fraction form
    144,146,499.21/198,921,183.06 = 78,065,477.73/x
  3. Step 3: Cross multiply
    144,146,499.21x = 198,921,183.06 × 78,065,477.73
  4. Step 4: Simplify right side
    144,146,499.21x = 15,528,877,186,195,684
  5. Step 5: Solve for x
    x = 15,528,877,186,195,684/144,146,499.21
  6. Step 6: Final answer
    x = 107,729,825.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.