Finding the Fourth Proportional to 99,237.70, 136,947.29 and 53,916.05
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Solution
The fourth proportional to 99,237.70, 136,947.29 and 53,916.05 is: 74,403.75
Step by Step Solution
- Step 1: Write the proportion equation
99,237.70 : 136,947.29 = 53,916.05 : x - Step 2: Convert to fraction form
99,237.70/136,947.29 = 53,916.05/x - Step 3: Cross multiply
99,237.70x = 136,947.29 × 53,916.05 - Step 4: Simplify right side
99,237.70x = 7,383,657,209.98 - Step 5: Solve for x
x = 7,383,657,209.98/99,237.70 - Step 6: Final answer
x = 74,403.75
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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.