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Finding the Fourth Proportional to 150,621.50, 207,860.10 and 83,553.50

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Solution

The fourth proportional to 150,621.50, 207,860.10 and 83,553.50 is: 115,305.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,621.50 : 207,860.10 = 83,553.50 : x
  2. Step 2: Convert to fraction form
    150,621.50/207,860.10 = 83,553.50/x
  3. Step 3: Cross multiply
    150,621.50x = 207,860.10 × 83,553.50
  4. Step 4: Simplify right side
    150,621.50x = 17,367,438,865.35
  5. Step 5: Solve for x
    x = 17,367,438,865.35/150,621.50
  6. Step 6: Final answer
    x = 115,305.18

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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.