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Finding the Fourth Proportional to 185,068.72, 255,394.78 and 100,185.72

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Solution

The fourth proportional to 185,068.72, 255,394.78 and 100,185.72 is: 138,256.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,068.72 : 255,394.78 = 100,185.72 : x
  2. Step 2: Convert to fraction form
    185,068.72/255,394.78 = 100,185.72/x
  3. Step 3: Cross multiply
    185,068.72x = 255,394.78 × 100,185.72
  4. Step 4: Simplify right side
    185,068.72x = 25,586,909,918.54
  5. Step 5: Solve for x
    x = 25,586,909,918.54/185,068.72
  6. Step 6: Final answer
    x = 138,256.26

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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.