Home / 117,969.72-162,749.88-66,971.40

Finding the Fourth Proportional to 117,969.72, 162,749.88 and 66,971.40

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Solution

The fourth proportional to 117,969.72, 162,749.88 and 66,971.40 is: 92,393.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,969.72 : 162,749.88 = 66,971.40 : x
  2. Step 2: Convert to fraction form
    117,969.72/162,749.88 = 66,971.40/x
  3. Step 3: Cross multiply
    117,969.72x = 162,749.88 × 66,971.40
  4. Step 4: Simplify right side
    117,969.72x = 10,899,587,313.43
  5. Step 5: Solve for x
    x = 10,899,587,313.43/117,969.72
  6. Step 6: Final answer
    x = 92,393.09

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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.