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Finding the Fourth Proportional to 201,980.04, 302,866.81 and 66,995.38

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Solution

The fourth proportional to 201,980.04, 302,866.81 and 66,995.38 is: 100,458.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,980.04 : 302,866.81 = 66,995.38 : x
  2. Step 2: Convert to fraction form
    201,980.04/302,866.81 = 66,995.38/x
  3. Step 3: Cross multiply
    201,980.04x = 302,866.81 × 66,995.38
  4. Step 4: Simplify right side
    201,980.04x = 20,290,676,690.36
  5. Step 5: Solve for x
    x = 20,290,676,690.36/201,980.04
  6. Step 6: Final answer
    x = 100,458.82

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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.