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Finding the Fourth Proportional to 188,509.69, 260,136.78 and 103,626.14

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Solution

The fourth proportional to 188,509.69, 260,136.78 and 103,626.14 is: 143,000.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,509.69 : 260,136.78 = 103,626.14 : x
  2. Step 2: Convert to fraction form
    188,509.69/260,136.78 = 103,626.14/x
  3. Step 3: Cross multiply
    188,509.69x = 260,136.78 × 103,626.14
  4. Step 4: Simplify right side
    188,509.69x = 26,956,970,383.43
  5. Step 5: Solve for x
    x = 26,956,970,383.43/188,509.69
  6. Step 6: Final answer
    x = 143,000.45

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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.