Home / 108,161.77-149,304.29-81,382.12

Finding the Fourth Proportional to 108,161.77, 149,304.29 and 81,382.12

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Solution

The fourth proportional to 108,161.77, 149,304.29 and 81,382.12 is: 112,338.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,161.77 : 149,304.29 = 81,382.12 : x
  2. Step 2: Convert to fraction form
    108,161.77/149,304.29 = 81,382.12/x
  3. Step 3: Cross multiply
    108,161.77x = 149,304.29 × 81,382.12
  4. Step 4: Simplify right side
    108,161.77x = 12,150,699,645.29
  5. Step 5: Solve for x
    x = 12,150,699,645.29/108,161.77
  6. Step 6: Final answer
    x = 112,338.21

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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.