Home / 112,165.80-154,720.44-66,813.36

Finding the Fourth Proportional to 112,165.80, 154,720.44 and 66,813.36

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Solution

The fourth proportional to 112,165.80, 154,720.44 and 66,813.36 is: 92,161.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,165.80 : 154,720.44 = 66,813.36 : x
  2. Step 2: Convert to fraction form
    112,165.80/154,720.44 = 66,813.36/x
  3. Step 3: Cross multiply
    112,165.80x = 154,720.44 × 66,813.36
  4. Step 4: Simplify right side
    112,165.80x = 10,337,392,457.08
  5. Step 5: Solve for x
    x = 10,337,392,457.08/112,165.80
  6. Step 6: Final answer
    x = 92,161.71

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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.