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Finding the Fourth Proportional to 185,270.61, 255,673.49 and 100,387.68

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Solution

The fourth proportional to 185,270.61, 255,673.49 and 100,387.68 is: 138,535.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,270.61 : 255,673.49 = 100,387.68 : x
  2. Step 2: Convert to fraction form
    185,270.61/255,673.49 = 100,387.68/x
  3. Step 3: Cross multiply
    185,270.61x = 255,673.49 × 100,387.68
  4. Step 4: Simplify right side
    185,270.61x = 25,666,468,498.60
  5. Step 5: Solve for x
    x = 25,666,468,498.60/185,270.61
  6. Step 6: Final answer
    x = 138,535.02

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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.