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Finding the Fourth Proportional to 140,668.92, 210,959.28 and 40,836.02

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Solution

The fourth proportional to 140,668.92, 210,959.28 and 40,836.02 is: 61,241.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,668.92 : 210,959.28 = 40,836.02 : x
  2. Step 2: Convert to fraction form
    140,668.92/210,959.28 = 40,836.02/x
  3. Step 3: Cross multiply
    140,668.92x = 210,959.28 × 40,836.02
  4. Step 4: Simplify right side
    140,668.92x = 8,614,736,322.47
  5. Step 5: Solve for x
    x = 8,614,736,322.47/140,668.92
  6. Step 6: Final answer
    x = 61,241.22

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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.