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Finding the Fourth Proportional to 134,728, 202,121.12 and 51,622.08

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Solution

The fourth proportional to 134,728, 202,121.12 and 51,622.08 is: 77,444.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,728 : 202,121.12 = 51,622.08 : x
  2. Step 2: Convert to fraction form
    134,728/202,121.12 = 51,622.08/x
  3. Step 3: Cross multiply
    134,728x = 202,121.12 × 51,622.08
  4. Step 4: Simplify right side
    134,728x = 10,433,912,626.33
  5. Step 5: Solve for x
    x = 10,433,912,626.33/134,728
  6. Step 6: Final answer
    x = 77,444.28

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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.