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Finding the Fourth Proportional to 159,054.94, 219,408.21 and 100,805.11

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Solution

The fourth proportional to 159,054.94, 219,408.21 and 100,805.11 is: 139,055.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,054.94 : 219,408.21 = 100,805.11 : x
  2. Step 2: Convert to fraction form
    159,054.94/219,408.21 = 100,805.11/x
  3. Step 3: Cross multiply
    159,054.94x = 219,408.21 × 100,805.11
  4. Step 4: Simplify right side
    159,054.94x = 22,117,468,743.95
  5. Step 5: Solve for x
    x = 22,117,468,743.95/159,054.94
  6. Step 6: Final answer
    x = 139,055.53

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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.