Finding the Fourth Proportional to 153,782.08, 212,221.02 and 86,714.08
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Solution
The fourth proportional to 153,782.08, 212,221.02 and 86,714.08 is: 119,666.42
Step by Step Solution
- Step 1: Write the proportion equation
153,782.08 : 212,221.02 = 86,714.08 : x - Step 2: Convert to fraction form
153,782.08/212,221.02 = 86,714.08/x - Step 3: Cross multiply
153,782.08x = 212,221.02 × 86,714.08 - Step 4: Simplify right side
153,782.08x = 18,402,550,505.96 - Step 5: Solve for x
x = 18,402,550,505.96/153,782.08 - Step 6: Final answer
x = 119,666.42
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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.