Home / 117,142.43-161,535.72-100,202.75

Finding the Fourth Proportional to 117,142.43, 161,535.72 and 100,202.75

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Solution

The fourth proportional to 117,142.43, 161,535.72 and 100,202.75 is: 138,176.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,142.43 : 161,535.72 = 100,202.75 : x
  2. Step 2: Convert to fraction form
    117,142.43/161,535.72 = 100,202.75/x
  3. Step 3: Cross multiply
    117,142.43x = 161,535.72 × 100,202.75
  4. Step 4: Simplify right side
    117,142.43x = 16,186,322,058.54
  5. Step 5: Solve for x
    x = 16,186,322,058.54/117,142.43
  6. Step 6: Final answer
    x = 138,176.43

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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.