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Finding the Fourth Proportional to 150,673.69, 207,915.94 and 89,409.32

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Solution

The fourth proportional to 150,673.69, 207,915.94 and 89,409.32 is: 123,376.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,673.69 : 207,915.94 = 89,409.32 : x
  2. Step 2: Convert to fraction form
    150,673.69/207,915.94 = 89,409.32/x
  3. Step 3: Cross multiply
    150,673.69x = 207,915.94 × 89,409.32
  4. Step 4: Simplify right side
    150,673.69x = 18,589,622,812.56
  5. Step 5: Solve for x
    x = 18,589,622,812.56/150,673.69
  6. Step 6: Final answer
    x = 123,376.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.