Finding the Fourth Proportional to 212,159.48, 292,779.66 and 121,544.78
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Solution
The fourth proportional to 212,159.48, 292,779.66 and 121,544.78 is: 167,731.55
Step by Step Solution
- Step 1: Write the proportion equation
212,159.48 : 292,779.66 = 121,544.78 : x - Step 2: Convert to fraction form
212,159.48/292,779.66 = 121,544.78/x - Step 3: Cross multiply
212,159.48x = 292,779.66 × 121,544.78 - Step 4: Simplify right side
212,159.48x = 35,585,837,899.28 - Step 5: Solve for x
x = 35,585,837,899.28/212,159.48 - Step 6: Final answer
x = 167,731.55
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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.