Home / 204,138.40-306,061.80-91,726.60

Finding the Fourth Proportional to 204,138.40, 306,061.80 and 91,726.60

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Solution

The fourth proportional to 204,138.40, 306,061.80 and 91,726.60 is: 137,524.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,138.40 : 306,061.80 = 91,726.60 : x
  2. Step 2: Convert to fraction form
    204,138.40/306,061.80 = 91,726.60/x
  3. Step 3: Cross multiply
    204,138.40x = 306,061.80 × 91,726.60
  4. Step 4: Simplify right side
    204,138.40x = 28,074,008,303.88
  5. Step 5: Solve for x
    x = 28,074,008,303.88/204,138.40
  6. Step 6: Final answer
    x = 137,524.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.