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Finding the Fourth Proportional to 100,703.54, 150,938.19 and 89,039.54

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Solution

The fourth proportional to 100,703.54, 150,938.19 and 89,039.54 is: 133,455.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,703.54 : 150,938.19 = 89,039.54 : x
  2. Step 2: Convert to fraction form
    100,703.54/150,938.19 = 89,039.54/x
  3. Step 3: Cross multiply
    100,703.54x = 150,938.19 × 89,039.54
  4. Step 4: Simplify right side
    100,703.54x = 13,439,467,006.03
  5. Step 5: Solve for x
    x = 13,439,467,006.03/100,703.54
  6. Step 6: Final answer
    x = 133,455.76

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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.