Home / 136,807,220.31-188,807,466.75-78,078,671.84

Finding the Fourth Proportional to 136,807,220.31, 188,807,466.75 and 78,078,671.84

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Solution

The fourth proportional to 136,807,220.31, 188,807,466.75 and 78,078,671.84 is: 107,756,273.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,807,220.31 : 188,807,466.75 = 78,078,671.84 : x
  2. Step 2: Convert to fraction form
    136,807,220.31/188,807,466.75 = 78,078,671.84/x
  3. Step 3: Cross multiply
    136,807,220.31x = 188,807,466.75 × 78,078,671.84
  4. Step 4: Simplify right side
    136,807,220.31x = 14,741,836,237,494,186
  5. Step 5: Solve for x
    x = 14,741,836,237,494,186/136,807,220.31
  6. Step 6: Final answer
    x = 107,756,273.42

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.