Finding the Fourth Proportional to 137,947.97, 190,371.59 and 77,514.99
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Solution
The fourth proportional to 137,947.97, 190,371.59 and 77,514.99 is: 106,972.59
Step by Step Solution
- Step 1: Write the proportion equation
137,947.97 : 190,371.59 = 77,514.99 : x - Step 2: Convert to fraction form
137,947.97/190,371.59 = 77,514.99/x - Step 3: Cross multiply
137,947.97x = 190,371.59 × 77,514.99 - Step 4: Simplify right side
137,947.97x = 14,756,651,507.56 - Step 5: Solve for x
x = 14,756,651,507.56/137,947.97 - Step 6: Final answer
x = 106,972.59
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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.