Home / 117,215.51-161,747.78-66,232.67

Finding the Fourth Proportional to 117,215.51, 161,747.78 and 66,232.67

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Solution

The fourth proportional to 117,215.51, 161,747.78 and 66,232.67 is: 91,395.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,215.51 : 161,747.78 = 66,232.67 : x
  2. Step 2: Convert to fraction form
    117,215.51/161,747.78 = 66,232.67/x
  3. Step 3: Cross multiply
    117,215.51x = 161,747.78 × 66,232.67
  4. Step 4: Simplify right side
    117,215.51x = 10,712,986,692.82
  5. Step 5: Solve for x
    x = 10,712,986,692.82/117,215.51
  6. Step 6: Final answer
    x = 91,395.64

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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.