Home / 117,039.44-161,502.72-66,047.60

Finding the Fourth Proportional to 117,039.44, 161,502.72 and 66,047.60

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Solution

The fourth proportional to 117,039.44, 161,502.72 and 66,047.60 is: 91,139.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,039.44 : 161,502.72 = 66,047.60 : x
  2. Step 2: Convert to fraction form
    117,039.44/161,502.72 = 66,047.60/x
  3. Step 3: Cross multiply
    117,039.44x = 161,502.72 × 66,047.60
  4. Step 4: Simplify right side
    117,039.44x = 10,666,867,049.47
  5. Step 5: Solve for x
    x = 10,666,867,049.47/117,039.44
  6. Step 6: Final answer
    x = 91,139.08

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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.