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Finding the Fourth Proportional to 199,809.90, 275,816.54 and 123,359.90

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Solution

The fourth proportional to 199,809.90, 275,816.54 and 123,359.90 is: 170,285.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,809.90 : 275,816.54 = 123,359.90 : x
  2. Step 2: Convert to fraction form
    199,809.90/275,816.54 = 123,359.90/x
  3. Step 3: Cross multiply
    199,809.90x = 275,816.54 × 123,359.90
  4. Step 4: Simplify right side
    199,809.90x = 34,024,700,885.66
  5. Step 5: Solve for x
    x = 34,024,700,885.66/199,809.90
  6. Step 6: Final answer
    x = 170,285.36

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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.