Home / 117,189.87-161,750.96-66,918.03

Finding the Fourth Proportional to 117,189.87, 161,750.96 and 66,918.03

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Solution

The fourth proportional to 117,189.87, 161,750.96 and 66,918.03 is: 92,363.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,189.87 : 161,750.96 = 66,918.03 : x
  2. Step 2: Convert to fraction form
    117,189.87/161,750.96 = 66,918.03/x
  3. Step 3: Cross multiply
    117,189.87x = 161,750.96 × 66,918.03
  4. Step 4: Simplify right side
    117,189.87x = 10,824,055,259.22
  5. Step 5: Solve for x
    x = 10,824,055,259.22/117,189.87
  6. Step 6: Final answer
    x = 92,363.40

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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.