Finding the Fourth Proportional to 157,615.80, 236,423.70 and 138,916.95
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Solution
The fourth proportional to 157,615.80, 236,423.70 and 138,916.95 is: 208,375.43
Step by Step Solution
- Step 1: Write the proportion equation
157,615.80 : 236,423.70 = 138,916.95 : x - Step 2: Convert to fraction form
157,615.80/236,423.70 = 138,916.95/x - Step 3: Cross multiply
157,615.80x = 236,423.70 × 138,916.95 - Step 4: Simplify right side
157,615.80x = 32,843,259,311.72 - Step 5: Solve for x
x = 32,843,259,311.72/157,615.80 - Step 6: Final answer
x = 208,375.43
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.