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Finding the Fourth Proportional to 140,758.56, 194,307.66 and 84,159

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Solution

The fourth proportional to 140,758.56, 194,307.66 and 84,159 is: 116,175.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,758.56 : 194,307.66 = 84,159 : x
  2. Step 2: Convert to fraction form
    140,758.56/194,307.66 = 84,159/x
  3. Step 3: Cross multiply
    140,758.56x = 194,307.66 × 84,159
  4. Step 4: Simplify right side
    140,758.56x = 16,352,738,357.94
  5. Step 5: Solve for x
    x = 16,352,738,357.94/140,758.56
  6. Step 6: Final answer
    x = 116,175.80

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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.