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Finding the Fourth Proportional to 188,068.57, 259,529.94 and 105,281.40

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Solution

The fourth proportional to 188,068.57, 259,529.94 and 105,281.40 is: 145,285.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,068.57 : 259,529.94 = 105,281.40 : x
  2. Step 2: Convert to fraction form
    188,068.57/259,529.94 = 105,281.40/x
  3. Step 3: Cross multiply
    188,068.57x = 259,529.94 × 105,281.40
  4. Step 4: Simplify right side
    188,068.57x = 27,323,675,234.60
  5. Step 5: Solve for x
    x = 27,323,675,234.60/188,068.57
  6. Step 6: Final answer
    x = 145,285.70

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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.