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Finding the Fourth Proportional to 186,379.09, 257,187.96 and 104,702.90

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Solution

The fourth proportional to 186,379.09, 257,187.96 and 104,702.90 is: 144,481.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,379.09 : 257,187.96 = 104,702.90 : x
  2. Step 2: Convert to fraction form
    186,379.09/257,187.96 = 104,702.90/x
  3. Step 3: Cross multiply
    186,379.09x = 257,187.96 × 104,702.90
  4. Step 4: Simplify right side
    186,379.09x = 26,928,323,971.14
  5. Step 5: Solve for x
    x = 26,928,323,971.14/186,379.09
  6. Step 6: Final answer
    x = 144,481.47

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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.