Home / 108,383.69-149,620.64-81,536.45

Finding the Fourth Proportional to 108,383.69, 149,620.64 and 81,536.45

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Solution

The fourth proportional to 108,383.69, 149,620.64 and 81,536.45 is: 112,558.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,383.69 : 149,620.64 = 81,536.45 : x
  2. Step 2: Convert to fraction form
    108,383.69/149,620.64 = 81,536.45/x
  3. Step 3: Cross multiply
    108,383.69x = 149,620.64 × 81,536.45
  4. Step 4: Simplify right side
    108,383.69x = 12,199,534,676.54
  5. Step 5: Solve for x
    x = 12,199,534,676.54/108,383.69
  6. Step 6: Final answer
    x = 112,558.77

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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.