Home / 208,505,076.80-312,906,914.40-87,423,425.60

Finding the Fourth Proportional to 208,505,076.80, 312,906,914.40 and 87,423,425.60

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Solution

The fourth proportional to 208,505,076.80, 312,906,914.40 and 87,423,425.60 is: 131,197,737.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,505,076.80 : 312,906,914.40 = 87,423,425.60 : x
  2. Step 2: Convert to fraction form
    208,505,076.80/312,906,914.40 = 87,423,425.60/x
  3. Step 3: Cross multiply
    208,505,076.80x = 312,906,914.40 × 87,423,425.60
  4. Step 4: Simplify right side
    208,505,076.80x = 27,355,394,350,773,964
  5. Step 5: Solve for x
    x = 27,355,394,350,773,964/208,505,076.80
  6. Step 6: Final answer
    x = 131,197,737.58

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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.