Finding the Fourth Proportional to 245,126.64, 338,237.94 and 137,676.09
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Solution
The fourth proportional to 245,126.64, 338,237.94 and 137,676.09 is: 189,972.32
Step by Step Solution
- Step 1: Write the proportion equation
245,126.64 : 338,237.94 = 137,676.09 : x - Step 2: Convert to fraction form
245,126.64/338,237.94 = 137,676.09/x - Step 3: Cross multiply
245,126.64x = 338,237.94 × 137,676.09 - Step 4: Simplify right side
245,126.64x = 46,567,277,068.85 - Step 5: Solve for x
x = 46,567,277,068.85/245,126.64 - Step 6: Final answer
x = 189,972.32
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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.