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Finding the Fourth Proportional to 188,776.55, 260,508.94 and 103,893.61

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Solution

The fourth proportional to 188,776.55, 260,508.94 and 103,893.61 is: 143,371.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,776.55 : 260,508.94 = 103,893.61 : x
  2. Step 2: Convert to fraction form
    188,776.55/260,508.94 = 103,893.61/x
  3. Step 3: Cross multiply
    188,776.55x = 260,508.94 × 103,893.61
  4. Step 4: Simplify right side
    188,776.55x = 27,065,214,213.87
  5. Step 5: Solve for x
    x = 27,065,214,213.87/188,776.55
  6. Step 6: Final answer
    x = 143,371.70

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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.