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Finding the Fourth Proportional to 236,745.45, 355,136.67 and 78,973.74

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Solution

The fourth proportional to 236,745.45, 355,136.67 and 78,973.74 is: 118,466.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,745.45 : 355,136.67 = 78,973.74 : x
  2. Step 2: Convert to fraction form
    236,745.45/355,136.67 = 78,973.74/x
  3. Step 3: Cross multiply
    236,745.45x = 355,136.67 × 78,973.74
  4. Step 4: Simplify right side
    236,745.45x = 28,046,471,041.05
  5. Step 5: Solve for x
    x = 28,046,471,041.05/236,745.45
  6. Step 6: Final answer
    x = 118,466.78

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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.