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Finding the Fourth Proportional to 104,408.83, 143,989.23 and 88,309.95

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Solution

The fourth proportional to 104,408.83, 143,989.23 and 88,309.95 is: 121,787.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,408.83 : 143,989.23 = 88,309.95 : x
  2. Step 2: Convert to fraction form
    104,408.83/143,989.23 = 88,309.95/x
  3. Step 3: Cross multiply
    104,408.83x = 143,989.23 × 88,309.95
  4. Step 4: Simplify right side
    104,408.83x = 12,715,681,701.84
  5. Step 5: Solve for x
    x = 12,715,681,701.84/104,408.83
  6. Step 6: Final answer
    x = 121,787.42

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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.