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Finding the Fourth Proportional to 167,383.28, 230,987.88 and 100,315.28

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Solution

The fourth proportional to 167,383.28, 230,987.88 and 100,315.28 is: 138,434.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,383.28 : 230,987.88 = 100,315.28 : x
  2. Step 2: Convert to fraction form
    167,383.28/230,987.88 = 100,315.28/x
  3. Step 3: Cross multiply
    167,383.28x = 230,987.88 × 100,315.28
  4. Step 4: Simplify right side
    167,383.28x = 23,171,613,858.81
  5. Step 5: Solve for x
    x = 23,171,613,858.81/167,383.28
  6. Step 6: Final answer
    x = 138,434.46

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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.