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Finding the Fourth Proportional to 102,897.54, 154,241.07 and 69,621.12

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Solution

The fourth proportional to 102,897.54, 154,241.07 and 69,621.12 is: 104,360.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,897.54 : 154,241.07 = 69,621.12 : x
  2. Step 2: Convert to fraction form
    102,897.54/154,241.07 = 69,621.12/x
  3. Step 3: Cross multiply
    102,897.54x = 154,241.07 × 69,621.12
  4. Step 4: Simplify right side
    102,897.54x = 10,738,436,043.40
  5. Step 5: Solve for x
    x = 10,738,436,043.40/102,897.54
  6. Step 6: Final answer
    x = 104,360.47

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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.