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Finding the Fourth Proportional to 183,743.80, 275,001.30 and 128,447.80

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Solution

The fourth proportional to 183,743.80, 275,001.30 and 128,447.80 is: 192,242.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    183,743.80 : 275,001.30 = 128,447.80 : x
  2. Step 2: Convert to fraction form
    183,743.80/275,001.30 = 128,447.80/x
  3. Step 3: Cross multiply
    183,743.80x = 275,001.30 × 128,447.80
  4. Step 4: Simplify right side
    183,743.80x = 35,323,311,982.14
  5. Step 5: Solve for x
    x = 35,323,311,982.14/183,743.80
  6. Step 6: Final answer
    x = 192,242.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.