Finding the Fourth Proportional to 155,718.40, 233,431.80 and 121,965.70
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Solution
The fourth proportional to 155,718.40, 233,431.80 and 121,965.70 is: 182,834.35
Step by Step Solution
- Step 1: Write the proportion equation
155,718.40 : 233,431.80 = 121,965.70 : x - Step 2: Convert to fraction form
155,718.40/233,431.80 = 121,965.70/x - Step 3: Cross multiply
155,718.40x = 233,431.80 × 121,965.70 - Step 4: Simplify right side
155,718.40x = 28,470,672,889.26 - Step 5: Solve for x
x = 28,470,672,889.26/155,718.40 - Step 6: Final answer
x = 182,834.35
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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.