Home / 117,690.16-162,419.97-66,012.11

Finding the Fourth Proportional to 117,690.16, 162,419.97 and 66,012.11

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Solution

The fourth proportional to 117,690.16, 162,419.97 and 66,012.11 is: 91,100.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,690.16 : 162,419.97 = 66,012.11 : x
  2. Step 2: Convert to fraction form
    117,690.16/162,419.97 = 66,012.11/x
  3. Step 3: Cross multiply
    117,690.16x = 162,419.97 × 66,012.11
  4. Step 4: Simplify right side
    117,690.16x = 10,721,683,783.68
  5. Step 5: Solve for x
    x = 10,721,683,783.68/117,690.16
  6. Step 6: Final answer
    x = 91,100.94

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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.