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Finding the Fourth Proportional to 141,615.71, 213,198.77 and 129,215.42

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Solution

The fourth proportional to 141,615.71, 213,198.77 and 129,215.42 is: 194,530.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,615.71 : 213,198.77 = 129,215.42 : x
  2. Step 2: Convert to fraction form
    141,615.71/213,198.77 = 129,215.42/x
  3. Step 3: Cross multiply
    141,615.71x = 213,198.77 × 129,215.42
  4. Step 4: Simplify right side
    141,615.71x = 27,548,566,896.96
  5. Step 5: Solve for x
    x = 27,548,566,896.96/141,615.71
  6. Step 6: Final answer
    x = 194,530.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.