Home / 208,504,057.80-312,905,385.90-87,422,406.60

Finding the Fourth Proportional to 208,504,057.80, 312,905,385.90 and 87,422,406.60

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Solution

The fourth proportional to 208,504,057.80, 312,905,385.90 and 87,422,406.60 is: 131,196,208.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,504,057.80 : 312,905,385.90 = 87,422,406.60 : x
  2. Step 2: Convert to fraction form
    208,504,057.80/312,905,385.90 = 87,422,406.60/x
  3. Step 3: Cross multiply
    208,504,057.80x = 312,905,385.90 × 87,422,406.60
  4. Step 4: Simplify right side
    208,504,057.80x = 27,354,941,873,479,704
  5. Step 5: Solve for x
    x = 27,354,941,873,479,704/208,504,057.80
  6. Step 6: Final answer
    x = 131,196,208.66

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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.