Home / 117,131.06-161,637.87-65,448.56

Finding the Fourth Proportional to 117,131.06, 161,637.87 and 65,448.56

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Solution

The fourth proportional to 117,131.06, 161,637.87 and 65,448.56 is: 90,317.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,131.06 : 161,637.87 = 65,448.56 : x
  2. Step 2: Convert to fraction form
    117,131.06/161,637.87 = 65,448.56/x
  3. Step 3: Cross multiply
    117,131.06x = 161,637.87 × 65,448.56
  4. Step 4: Simplify right side
    117,131.06x = 10,578,965,832.97
  5. Step 5: Solve for x
    x = 10,578,965,832.97/117,131.06
  6. Step 6: Final answer
    x = 90,317.34

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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.