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Finding the Fourth Proportional to 188,511.68, 260,129.40 and 103,626.92

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Solution

The fourth proportional to 188,511.68, 260,129.40 and 103,626.92 is: 142,995.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,511.68 : 260,129.40 = 103,626.92 : x
  2. Step 2: Convert to fraction form
    188,511.68/260,129.40 = 103,626.92/x
  3. Step 3: Cross multiply
    188,511.68x = 260,129.40 × 103,626.92
  4. Step 4: Simplify right side
    188,511.68x = 26,956,408,523.45
  5. Step 5: Solve for x
    x = 26,956,408,523.45/188,511.68
  6. Step 6: Final answer
    x = 142,995.96

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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.