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Finding the Fourth Proportional to 185,257.80, 255,655.71 and 100,374.93

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Solution

The fourth proportional to 185,257.80, 255,655.71 and 100,374.93 is: 138,517.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,257.80 : 255,655.71 = 100,374.93 : x
  2. Step 2: Convert to fraction form
    185,257.80/255,655.71 = 100,374.93/x
  3. Step 3: Cross multiply
    185,257.80x = 255,655.71 × 100,374.93
  4. Step 4: Simplify right side
    185,257.80x = 25,661,423,995.35
  5. Step 5: Solve for x
    x = 25,661,423,995.35/185,257.80
  6. Step 6: Final answer
    x = 138,517.37

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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.