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Finding the Fourth Proportional to 200,940.97, 301,457.45 and 87,107.80

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Solution

The fourth proportional to 200,940.97, 301,457.45 and 87,107.80 is: 130,681.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,940.97 : 301,457.45 = 87,107.80 : x
  2. Step 2: Convert to fraction form
    200,940.97/301,457.45 = 87,107.80/x
  3. Step 3: Cross multiply
    200,940.97x = 301,457.45 × 87,107.80
  4. Step 4: Simplify right side
    200,940.97x = 26,259,295,263.11
  5. Step 5: Solve for x
    x = 26,259,295,263.11/200,940.97
  6. Step 6: Final answer
    x = 130,681.64

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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.