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Finding the Fourth Proportional to 201,641.16, 302,489.42 and 68,485.67

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Solution

The fourth proportional to 201,641.16, 302,489.42 and 68,485.67 is: 102,737.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,641.16 : 302,489.42 = 68,485.67 : x
  2. Step 2: Convert to fraction form
    201,641.16/302,489.42 = 68,485.67/x
  3. Step 3: Cross multiply
    201,641.16x = 302,489.42 × 68,485.67
  4. Step 4: Simplify right side
    201,641.16x = 20,716,189,876.07
  5. Step 5: Solve for x
    x = 20,716,189,876.07/201,641.16
  6. Step 6: Final answer
    x = 102,737.90

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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.