Home / 100,831,391.20-151,247,086.80-80,675,999.20

Finding the Fourth Proportional to 100,831,391.20, 151,247,086.80 and 80,675,999.20

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Solution

The fourth proportional to 100,831,391.20, 151,247,086.80 and 80,675,999.20 is: 121,013,998.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,831,391.20 : 151,247,086.80 = 80,675,999.20 : x
  2. Step 2: Convert to fraction form
    100,831,391.20/151,247,086.80 = 80,675,999.20/x
  3. Step 3: Cross multiply
    100,831,391.20x = 151,247,086.80 × 80,675,999.20
  4. Step 4: Simplify right side
    100,831,391.20x = 12,202,009,853,679,132
  5. Step 5: Solve for x
    x = 12,202,009,853,679,132/100,831,391.20
  6. Step 6: Final answer
    x = 121,013,998.80

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1.5x scale

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.