Home / 100,728,087.40-151,092,131.10-78,809,098.60

Finding the Fourth Proportional to 100,728,087.40, 151,092,131.10 and 78,809,098.60

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Solution

The fourth proportional to 100,728,087.40, 151,092,131.10 and 78,809,098.60 is: 118,213,647.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,728,087.40 : 151,092,131.10 = 78,809,098.60 : x
  2. Step 2: Convert to fraction form
    100,728,087.40/151,092,131.10 = 78,809,098.60/x
  3. Step 3: Cross multiply
    100,728,087.40x = 151,092,131.10 × 78,809,098.60
  4. Step 4: Simplify right side
    100,728,087.40x = 11,907,434,657,544,026
  5. Step 5: Solve for x
    x = 11,907,434,657,544,026/100,728,087.40
  6. Step 6: Final answer
    x = 118,213,647.90

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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.