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Finding the Fourth Proportional to 188,506.90, 260,140.38 and 103,629.43

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Solution

The fourth proportional to 188,506.90, 260,140.38 and 103,629.43 is: 143,009.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,506.90 : 260,140.38 = 103,629.43 : x
  2. Step 2: Convert to fraction form
    188,506.90/260,140.38 = 103,629.43/x
  3. Step 3: Cross multiply
    188,506.90x = 260,140.38 × 103,629.43
  4. Step 4: Simplify right side
    188,506.90x = 26,958,199,299.38
  5. Step 5: Solve for x
    x = 26,958,199,299.38/188,506.90
  6. Step 6: Final answer
    x = 143,009.09

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1.5x scale

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.