Home / 108,221.85-149,249.45-67,939.36

Finding the Fourth Proportional to 108,221.85, 149,249.45 and 67,939.36

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Solution

The fourth proportional to 108,221.85, 149,249.45 and 67,939.36 is: 93,695.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,221.85 : 149,249.45 = 67,939.36 : x
  2. Step 2: Convert to fraction form
    108,221.85/149,249.45 = 67,939.36/x
  3. Step 3: Cross multiply
    108,221.85x = 149,249.45 × 67,939.36
  4. Step 4: Simplify right side
    108,221.85x = 10,139,911,910.08
  5. Step 5: Solve for x
    x = 10,139,911,910.08/108,221.85
  6. Step 6: Final answer
    x = 93,695.61

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1.5x scale

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.