Finding the Fourth Proportional to 105,970.80, 146,388.96 and 100,372.08
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Solution
The fourth proportional to 105,970.80, 146,388.96 and 100,372.08 is: 138,654.84
Step by Step Solution
- Step 1: Write the proportion equation
105,970.80 : 146,388.96 = 100,372.08 : x - Step 2: Convert to fraction form
105,970.80/146,388.96 = 100,372.08/x - Step 3: Cross multiply
105,970.80x = 146,388.96 × 100,372.08 - Step 4: Simplify right side
105,970.80x = 14,693,364,404.24 - Step 5: Solve for x
x = 14,693,364,404.24/105,970.80 - Step 6: Final answer
x = 138,654.84
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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.