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Finding the Fourth Proportional to 163,542.35, 245,408.69 and 68,765.67

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Solution

The fourth proportional to 163,542.35, 245,408.69 and 68,765.67 is: 103,188.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,542.35 : 245,408.69 = 68,765.67 : x
  2. Step 2: Convert to fraction form
    163,542.35/245,408.69 = 68,765.67/x
  3. Step 3: Cross multiply
    163,542.35x = 245,408.69 × 68,765.67
  4. Step 4: Simplify right side
    163,542.35x = 16,875,692,647.84
  5. Step 5: Solve for x
    x = 16,875,692,647.84/163,542.35
  6. Step 6: Final answer
    x = 103,188.52

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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.