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Finding the Fourth Proportional to 102,768.40, 154,152.54 and 43,562.56

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Solution

The fourth proportional to 102,768.40, 154,152.54 and 43,562.56 is: 65,343.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,768.40 : 154,152.54 = 43,562.56 : x
  2. Step 2: Convert to fraction form
    102,768.40/154,152.54 = 43,562.56/x
  3. Step 3: Cross multiply
    102,768.40x = 154,152.54 × 43,562.56
  4. Step 4: Simplify right side
    102,768.40x = 6,715,279,272.90
  5. Step 5: Solve for x
    x = 6,715,279,272.90/102,768.40
  6. Step 6: Final answer
    x = 65,343.81

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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.