Home / 145,452,141.20-200,728,221.42-79,376,906.15

Finding the Fourth Proportional to 145,452,141.20, 200,728,221.42 and 79,376,906.15

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Solution

The fourth proportional to 145,452,141.20, 200,728,221.42 and 79,376,906.15 is: 109,542,458.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,452,141.20 : 200,728,221.42 = 79,376,906.15 : x
  2. Step 2: Convert to fraction form
    145,452,141.20/200,728,221.42 = 79,376,906.15/x
  3. Step 3: Cross multiply
    145,452,141.20x = 200,728,221.42 × 79,376,906.15
  4. Step 4: Simplify right side
    145,452,141.20x = 15,933,185,193,818,664
  5. Step 5: Solve for x
    x = 15,933,185,193,818,664/145,452,141.20
  6. Step 6: Final answer
    x = 109,542,458.86

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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.