Home / 212,039.96-318,099.36-69,895.22

Finding the Fourth Proportional to 212,039.96, 318,099.36 and 69,895.22

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Solution

The fourth proportional to 212,039.96, 318,099.36 and 69,895.22 is: 104,855.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,039.96 : 318,099.36 = 69,895.22 : x
  2. Step 2: Convert to fraction form
    212,039.96/318,099.36 = 69,895.22/x
  3. Step 3: Cross multiply
    212,039.96x = 318,099.36 × 69,895.22
  4. Step 4: Simplify right side
    212,039.96x = 22,233,624,749.06
  5. Step 5: Solve for x
    x = 22,233,624,749.06/212,039.96
  6. Step 6: Final answer
    x = 104,855.82

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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.