Home / 138,818,515.20-208,227,772.80-70,794,067.20

Finding the Fourth Proportional to 138,818,515.20, 208,227,772.80 and 70,794,067.20

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Solution

The fourth proportional to 138,818,515.20, 208,227,772.80 and 70,794,067.20 is: 106,191,100.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,818,515.20 : 208,227,772.80 = 70,794,067.20 : x
  2. Step 2: Convert to fraction form
    138,818,515.20/208,227,772.80 = 70,794,067.20/x
  3. Step 3: Cross multiply
    138,818,515.20x = 208,227,772.80 × 70,794,067.20
  4. Step 4: Simplify right side
    138,818,515.20x = 14,741,290,940,509,534
  5. Step 5: Solve for x
    x = 14,741,290,940,509,534/138,818,515.20
  6. Step 6: Final answer
    x = 106,191,100.80

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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.