Home / 117,109.08-161,570.16-66,115.44

Finding the Fourth Proportional to 117,109.08, 161,570.16 and 66,115.44

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Solution

The fourth proportional to 117,109.08, 161,570.16 and 66,115.44 is: 91,216.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,109.08 : 161,570.16 = 66,115.44 : x
  2. Step 2: Convert to fraction form
    117,109.08/161,570.16 = 66,115.44/x
  3. Step 3: Cross multiply
    117,109.08x = 161,570.16 × 66,115.44
  4. Step 4: Simplify right side
    117,109.08x = 10,682,282,219.27
  5. Step 5: Solve for x
    x = 10,682,282,219.27/117,109.08
  6. Step 6: Final answer
    x = 91,216.52

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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.