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Finding the Fourth Proportional to 188,668.38, 282,980.94 and 70,343.58

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Solution

The fourth proportional to 188,668.38, 282,980.94 and 70,343.58 is: 105,507.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,668.38 : 282,980.94 = 70,343.58 : x
  2. Step 2: Convert to fraction form
    188,668.38/282,980.94 = 70,343.58/x
  3. Step 3: Cross multiply
    188,668.38x = 282,980.94 × 70,343.58
  4. Step 4: Simplify right side
    188,668.38x = 19,905,892,391.37
  5. Step 5: Solve for x
    x = 19,905,892,391.37/188,668.38
  6. Step 6: Final answer
    x = 105,507.31

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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.