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Finding the Fourth Proportional to 157,676.40, 217,613.40 and 104,072.88

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Solution

The fourth proportional to 157,676.40, 217,613.40 and 104,072.88 is: 143,633.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,676.40 : 217,613.40 = 104,072.88 : x
  2. Step 2: Convert to fraction form
    157,676.40/217,613.40 = 104,072.88/x
  3. Step 3: Cross multiply
    157,676.40x = 217,613.40 × 104,072.88
  4. Step 4: Simplify right side
    157,676.40x = 22,647,653,264.59
  5. Step 5: Solve for x
    x = 22,647,653,264.59/157,676.40
  6. Step 6: Final answer
    x = 143,633.75

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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.