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Finding the Fourth Proportional to 108,467.94, 149,740.11 and 68,203.86

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Solution

The fourth proportional to 108,467.94, 149,740.11 and 68,203.86 is: 94,155.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,467.94 : 149,740.11 = 68,203.86 : x
  2. Step 2: Convert to fraction form
    108,467.94/149,740.11 = 68,203.86/x
  3. Step 3: Cross multiply
    108,467.94x = 149,740.11 × 68,203.86
  4. Step 4: Simplify right side
    108,467.94x = 10,212,853,498.82
  5. Step 5: Solve for x
    x = 10,212,853,498.82/108,467.94
  6. Step 6: Final answer
    x = 94,155.50

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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.