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Finding the Fourth Proportional to 188,702.62, 260,409.62 and 103,817.86

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Solution

The fourth proportional to 188,702.62, 260,409.62 and 103,817.86 is: 143,268.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,702.62 : 260,409.62 = 103,817.86 : x
  2. Step 2: Convert to fraction form
    188,702.62/260,409.62 = 103,817.86/x
  3. Step 3: Cross multiply
    188,702.62x = 260,409.62 × 103,817.86
  4. Step 4: Simplify right side
    188,702.62x = 27,035,169,471.81
  5. Step 5: Solve for x
    x = 27,035,169,471.81/188,702.62
  6. Step 6: Final answer
    x = 143,268.65

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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.