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Finding the Fourth Proportional to 188,506.63, 260,132.55 and 103,623.09

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Solution

The fourth proportional to 188,506.63, 260,132.55 and 103,623.09 is: 142,996.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,506.63 : 260,132.55 = 103,623.09 : x
  2. Step 2: Convert to fraction form
    188,506.63/260,132.55 = 103,623.09/x
  3. Step 3: Cross multiply
    188,506.63x = 260,132.55 × 103,623.09
  4. Step 4: Simplify right side
    188,506.63x = 26,955,738,640.58
  5. Step 5: Solve for x
    x = 26,955,738,640.58/188,506.63
  6. Step 6: Final answer
    x = 142,996.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.