Finding the Fourth Proportional to 137,935.70, 206,903.55 and 102,943.70
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Solution
The fourth proportional to 137,935.70, 206,903.55 and 102,943.70 is: 154,415.55
Step by Step Solution
- Step 1: Write the proportion equation
137,935.70 : 206,903.55 = 102,943.70 : x - Step 2: Convert to fraction form
137,935.70/206,903.55 = 102,943.70/x - Step 3: Cross multiply
137,935.70x = 206,903.55 × 102,943.70 - Step 4: Simplify right side
137,935.70x = 21,299,416,980.14 - Step 5: Solve for x
x = 21,299,416,980.14/137,935.70 - Step 6: Final answer
x = 154,415.55
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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.