Finding the Fourth Proportional to 153,924.78, 212,451.62 and 90,283.08
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Solution
The fourth proportional to 153,924.78, 212,451.62 and 90,283.08 is: 124,611.43
Step by Step Solution
- Step 1: Write the proportion equation
153,924.78 : 212,451.62 = 90,283.08 : x - Step 2: Convert to fraction form
153,924.78/212,451.62 = 90,283.08/x - Step 3: Cross multiply
153,924.78x = 212,451.62 × 90,283.08 - Step 4: Simplify right side
153,924.78x = 19,180,786,073.46 - Step 5: Solve for x
x = 19,180,786,073.46/153,924.78 - Step 6: Final answer
x = 124,611.43
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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.