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Finding the Fourth Proportional to 140,668.63, 211,021.47 and 45,865.52

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Solution

The fourth proportional to 140,668.63, 211,021.47 and 45,865.52 is: 68,804.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,668.63 : 211,021.47 = 45,865.52 : x
  2. Step 2: Convert to fraction form
    140,668.63/211,021.47 = 45,865.52/x
  3. Step 3: Cross multiply
    140,668.63x = 211,021.47 × 45,865.52
  4. Step 4: Simplify right side
    140,668.63x = 9,678,609,452.71
  5. Step 5: Solve for x
    x = 9,678,609,452.71/140,668.63
  6. Step 6: Final answer
    x = 68,804.32

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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.