Finding the Fourth Proportional to 143,572.19, 198,095.76 and 120,688.99
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Solution
The fourth proportional to 143,572.19, 198,095.76 and 120,688.99 is: 166,522.34
Step by Step Solution
- Step 1: Write the proportion equation
143,572.19 : 198,095.76 = 120,688.99 : x - Step 2: Convert to fraction form
143,572.19/198,095.76 = 120,688.99/x - Step 3: Cross multiply
143,572.19x = 198,095.76 × 120,688.99 - Step 4: Simplify right side
143,572.19x = 23,907,976,702.44 - Step 5: Solve for x
x = 23,907,976,702.44/143,572.19 - Step 6: Final answer
x = 166,522.34
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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.