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Finding the Fourth Proportional to 150,474.52, 207,720.98 and 105,329.80

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Solution

The fourth proportional to 150,474.52, 207,720.98 and 105,329.80 is: 145,401.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,474.52 : 207,720.98 = 105,329.80 : x
  2. Step 2: Convert to fraction form
    150,474.52/207,720.98 = 105,329.80/x
  3. Step 3: Cross multiply
    150,474.52x = 207,720.98 × 105,329.80
  4. Step 4: Simplify right side
    150,474.52x = 21,879,209,279.20
  5. Step 5: Solve for x
    x = 21,879,209,279.20/150,474.52
  6. Step 6: Final answer
    x = 145,401.42

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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.