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Finding the Fourth Proportional to 188,691.03, 260,430.84 and 108,172.62

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Solution

The fourth proportional to 188,691.03, 260,430.84 and 108,172.62 is: 149,299.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,691.03 : 260,430.84 = 108,172.62 : x
  2. Step 2: Convert to fraction form
    188,691.03/260,430.84 = 108,172.62/x
  3. Step 3: Cross multiply
    188,691.03x = 260,430.84 × 108,172.62
  4. Step 4: Simplify right side
    188,691.03x = 28,171,486,291.60
  5. Step 5: Solve for x
    x = 28,171,486,291.60/188,691.03
  6. Step 6: Final answer
    x = 149,299.55

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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.