Home / 99,856,010.60-149,784,015.90-81,716,157.80

Finding the Fourth Proportional to 99,856,010.60, 149,784,015.90 and 81,716,157.80

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Solution

The fourth proportional to 99,856,010.60, 149,784,015.90 and 81,716,157.80 is: 122,574,236.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,856,010.60 : 149,784,015.90 = 81,716,157.80 : x
  2. Step 2: Convert to fraction form
    99,856,010.60/149,784,015.90 = 81,716,157.80/x
  3. Step 3: Cross multiply
    99,856,010.60x = 149,784,015.90 × 81,716,157.80
  4. Step 4: Simplify right side
    99,856,010.60x = 12,239,774,279,202,110
  5. Step 5: Solve for x
    x = 12,239,774,279,202,110/99,856,010.60
  6. Step 6: Final answer
    x = 122,574,236.70

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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.