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Finding the Fourth Proportional to 140,668.55, 210,969.71 and 40,802.39

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Solution

The fourth proportional to 140,668.55, 210,969.71 and 40,802.39 is: 61,193.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,668.55 : 210,969.71 = 40,802.39 : x
  2. Step 2: Convert to fraction form
    140,668.55/210,969.71 = 40,802.39/x
  3. Step 3: Cross multiply
    140,668.55x = 210,969.71 × 40,802.39
  4. Step 4: Simplify right side
    140,668.55x = 8,608,068,181.59
  5. Step 5: Solve for x
    x = 8,608,068,181.59/140,668.55
  6. Step 6: Final answer
    x = 61,193.98

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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.