Home / 113,863.56-157,165.08-66,138.36

Finding the Fourth Proportional to 113,863.56, 157,165.08 and 66,138.36

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Solution

The fourth proportional to 113,863.56, 157,165.08 and 66,138.36 is: 91,290.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,863.56 : 157,165.08 = 66,138.36 : x
  2. Step 2: Convert to fraction form
    113,863.56/157,165.08 = 66,138.36/x
  3. Step 3: Cross multiply
    113,863.56x = 157,165.08 × 66,138.36
  4. Step 4: Simplify right side
    113,863.56x = 10,394,640,640.47
  5. Step 5: Solve for x
    x = 10,394,640,640.47/113,863.56
  6. Step 6: Final answer
    x = 91,290.32

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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.