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Finding the Fourth Proportional to 185,871.88, 256,504.26 and 100,989.64

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Solution

The fourth proportional to 185,871.88, 256,504.26 and 100,989.64 is: 139,366.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,871.88 : 256,504.26 = 100,989.64 : x
  2. Step 2: Convert to fraction form
    185,871.88/256,504.26 = 100,989.64/x
  3. Step 3: Cross multiply
    185,871.88x = 256,504.26 × 100,989.64
  4. Step 4: Simplify right side
    185,871.88x = 25,904,272,875.87
  5. Step 5: Solve for x
    x = 25,904,272,875.87/185,871.88
  6. Step 6: Final answer
    x = 139,366.28

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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.