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Finding the Fourth Proportional to 150,679.75, 207,947.78 and 83,611.75

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Solution

The fourth proportional to 150,679.75, 207,947.78 and 83,611.75 is: 115,389.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,679.75 : 207,947.78 = 83,611.75 : x
  2. Step 2: Convert to fraction form
    150,679.75/207,947.78 = 83,611.75/x
  3. Step 3: Cross multiply
    150,679.75x = 207,947.78 × 83,611.75
  4. Step 4: Simplify right side
    150,679.75x = 17,386,877,794.42
  5. Step 5: Solve for x
    x = 17,386,877,794.42/150,679.75
  6. Step 6: Final answer
    x = 115,389.61

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1.5x scale

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.