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Finding the Fourth Proportional to 185,243.55, 255,636.36 and 100,360.62

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Solution

The fourth proportional to 185,243.55, 255,636.36 and 100,360.62 is: 138,497.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,243.55 : 255,636.36 = 100,360.62 : x
  2. Step 2: Convert to fraction form
    185,243.55/255,636.36 = 100,360.62/x
  3. Step 3: Cross multiply
    185,243.55x = 255,636.36 × 100,360.62
  4. Step 4: Simplify right side
    185,243.55x = 25,655,821,804.16
  5. Step 5: Solve for x
    x = 25,655,821,804.16/185,243.55
  6. Step 6: Final answer
    x = 138,497.79

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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.