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Finding the Fourth Proportional to 140,782.69, 211,201.62 and 61,896.70

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Solution

The fourth proportional to 140,782.69, 211,201.62 and 61,896.70 is: 92,857.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,782.69 : 211,201.62 = 61,896.70 : x
  2. Step 2: Convert to fraction form
    140,782.69/211,201.62 = 61,896.70/x
  3. Step 3: Cross multiply
    140,782.69x = 211,201.62 × 61,896.70
  4. Step 4: Simplify right side
    140,782.69x = 13,072,683,312.65
  5. Step 5: Solve for x
    x = 13,072,683,312.65/140,782.69
  6. Step 6: Final answer
    x = 92,857.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.