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Finding the Fourth Proportional to 102,897.79, 154,241.44 and 69,621.37

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Solution

The fourth proportional to 102,897.79, 154,241.44 and 69,621.37 is: 104,360.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,897.79 : 154,241.44 = 69,621.37 : x
  2. Step 2: Convert to fraction form
    102,897.79/154,241.44 = 69,621.37/x
  3. Step 3: Cross multiply
    102,897.79x = 154,241.44 × 69,621.37
  4. Step 4: Simplify right side
    102,897.79x = 10,738,500,363.57
  5. Step 5: Solve for x
    x = 10,738,500,363.57/102,897.79
  6. Step 6: Final answer
    x = 104,360.85

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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.