Home / 144,146,502.21-198,921,187.20-78,065,480.73

Finding the Fourth Proportional to 144,146,502.21, 198,921,187.20 and 78,065,480.73

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Solution

The fourth proportional to 144,146,502.21, 198,921,187.20 and 78,065,480.73 is: 107,729,829.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,146,502.21 : 198,921,187.20 = 78,065,480.73 : x
  2. Step 2: Convert to fraction form
    144,146,502.21/198,921,187.20 = 78,065,480.73/x
  3. Step 3: Cross multiply
    144,146,502.21x = 198,921,187.20 × 78,065,480.73
  4. Step 4: Simplify right side
    144,146,502.21x = 15,528,878,106,150,322
  5. Step 5: Solve for x
    x = 15,528,878,106,150,322/144,146,502.21
  6. Step 6: Final answer
    x = 107,729,829.50

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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.