Finding the Fourth Proportional to 154,219.72, 212,811.52 and 93,781.96
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Solution
The fourth proportional to 154,219.72, 212,811.52 and 93,781.96 is: 129,411.99
Step by Step Solution
- Step 1: Write the proportion equation
154,219.72 : 212,811.52 = 93,781.96 : x - Step 2: Convert to fraction form
154,219.72/212,811.52 = 93,781.96/x - Step 3: Cross multiply
154,219.72x = 212,811.52 × 93,781.96 - Step 4: Simplify right side
154,219.72x = 19,957,881,456.18 - Step 5: Solve for x
x = 19,957,881,456.18/154,219.72 - Step 6: Final answer
x = 129,411.99
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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.