Home / 143,789,972.40-215,684,958.60-120,831,721.20

Finding the Fourth Proportional to 143,789,972.40, 215,684,958.60 and 120,831,721.20

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Solution

The fourth proportional to 143,789,972.40, 215,684,958.60 and 120,831,721.20 is: 181,247,581.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,789,972.40 : 215,684,958.60 = 120,831,721.20 : x
  2. Step 2: Convert to fraction form
    143,789,972.40/215,684,958.60 = 120,831,721.20/x
  3. Step 3: Cross multiply
    143,789,972.40x = 215,684,958.60 × 120,831,721.20
  4. Step 4: Simplify right side
    143,789,972.40x = 26,061,584,784,588,744
  5. Step 5: Solve for x
    x = 26,061,584,784,588,744/143,789,972.40
  6. Step 6: Final answer
    x = 181,247,581.80

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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.