Finding the Fourth Proportional to 208,059.10, 312,088.65 and 74,943.70
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Solution
The fourth proportional to 208,059.10, 312,088.65 and 74,943.70 is: 112,415.55
Step by Step Solution
- Step 1: Write the proportion equation
208,059.10 : 312,088.65 = 74,943.70 : x - Step 2: Convert to fraction form
208,059.10/312,088.65 = 74,943.70/x - Step 3: Cross multiply
208,059.10x = 312,088.65 × 74,943.70 - Step 4: Simplify right side
208,059.10x = 23,389,078,159.01 - Step 5: Solve for x
x = 23,389,078,159.01/208,059.10 - Step 6: Final answer
x = 112,415.55
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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.