Home / 139,071,796.20-208,607,694.30-81,591,604.20

Finding the Fourth Proportional to 139,071,796.20, 208,607,694.30 and 81,591,604.20

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Solution

The fourth proportional to 139,071,796.20, 208,607,694.30 and 81,591,604.20 is: 122,387,406.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,071,796.20 : 208,607,694.30 = 81,591,604.20 : x
  2. Step 2: Convert to fraction form
    139,071,796.20/208,607,694.30 = 81,591,604.20/x
  3. Step 3: Cross multiply
    139,071,796.20x = 208,607,694.30 × 81,591,604.20
  4. Step 4: Simplify right side
    139,071,796.20x = 17,020,636,426,400,198
  5. Step 5: Solve for x
    x = 17,020,636,426,400,198/139,071,796.20
  6. Step 6: Final answer
    x = 122,387,406.30

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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.