Home / 212,066.36-318,203.30-99,757.91

Finding the Fourth Proportional to 212,066.36, 318,203.30 and 99,757.91

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Solution

The fourth proportional to 212,066.36, 318,203.30 and 99,757.91 is: 149,685.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,066.36 : 318,203.30 = 99,757.91 : x
  2. Step 2: Convert to fraction form
    212,066.36/318,203.30 = 99,757.91/x
  3. Step 3: Cross multiply
    212,066.36x = 318,203.30 × 99,757.91
  4. Step 4: Simplify right side
    212,066.36x = 31,743,296,163.10
  5. Step 5: Solve for x
    x = 31,743,296,163.10/212,066.36
  6. Step 6: Final answer
    x = 149,685.67

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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.