Finding the Fourth Proportional to 212,114.98, 292,719.63 and 115,319.78
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Solution
The fourth proportional to 212,114.98, 292,719.63 and 115,319.78 is: 159,141.82
Step by Step Solution
- Step 1: Write the proportion equation
212,114.98 : 292,719.63 = 115,319.78 : x - Step 2: Convert to fraction form
212,114.98/292,719.63 = 115,319.78/x - Step 3: Cross multiply
212,114.98x = 292,719.63 × 115,319.78 - Step 4: Simplify right side
212,114.98x = 33,756,363,333.28 - Step 5: Solve for x
x = 33,756,363,333.28/212,114.98 - Step 6: Final answer
x = 159,141.82
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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.