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Finding the Fourth Proportional to 185,362.74, 255,800.28 and 100,479.78

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Solution

The fourth proportional to 185,362.74, 255,800.28 and 100,479.78 is: 138,661.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,362.74 : 255,800.28 = 100,479.78 : x
  2. Step 2: Convert to fraction form
    185,362.74/255,800.28 = 100,479.78/x
  3. Step 3: Cross multiply
    185,362.74x = 255,800.28 × 100,479.78
  4. Step 4: Simplify right side
    185,362.74x = 25,702,755,858.34
  5. Step 5: Solve for x
    x = 25,702,755,858.34/185,362.74
  6. Step 6: Final answer
    x = 138,661.93

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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.