Home / 99,664,009.40-149,212,578.90-76,800,236.60

Finding the Fourth Proportional to 99,664,009.40, 149,212,578.90 and 76,800,236.60

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Solution

The fourth proportional to 99,664,009.40, 149,212,578.90 and 76,800,236.60 is: 114,981,942.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,664,009.40 : 149,212,578.90 = 76,800,236.60 : x
  2. Step 2: Convert to fraction form
    99,664,009.40/149,212,578.90 = 76,800,236.60/x
  3. Step 3: Cross multiply
    99,664,009.40x = 149,212,578.90 × 76,800,236.60
  4. Step 4: Simplify right side
    99,664,009.40x = 11,459,561,363,216,168
  5. Step 5: Solve for x
    x = 11,459,561,363,216,168/99,664,009.40
  6. Step 6: Final answer
    x = 114,981,942.15

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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.