Finding the Fourth Proportional to 154,066.93, 212,592.81 and 90,381.49
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Solution
The fourth proportional to 154,066.93, 212,592.81 and 90,381.49 is: 124,714.99
Step by Step Solution
- Step 1: Write the proportion equation
154,066.93 : 212,592.81 = 90,381.49 : x - Step 2: Convert to fraction form
154,066.93/212,592.81 = 90,381.49/x - Step 3: Cross multiply
154,066.93x = 212,592.81 × 90,381.49 - Step 4: Simplify right side
154,066.93x = 19,214,454,931.09 - Step 5: Solve for x
x = 19,214,454,931.09/154,066.93 - Step 6: Final answer
x = 124,714.99
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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.