Finding the Fourth Proportional to 197,129,980.07, 272,123,138.54 and 122,827,251.49
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Solution
The fourth proportional to 197,129,980.07, 272,123,138.54 and 122,827,251.49 is: 169,553,799.79
Step by Step Solution
- Step 1: Write the proportion equation
197,129,980.07 : 272,123,138.54 = 122,827,251.49 : x - Step 2: Convert to fraction form
197,129,980.07/272,123,138.54 = 122,827,251.49/x - Step 3: Cross multiply
197,129,980.07x = 272,123,138.54 × 122,827,251.49 - Step 4: Simplify right side
197,129,980.07x = 33,424,137,173,327,452 - Step 5: Solve for x
x = 33,424,137,173,327,452/197,129,980.07 - Step 6: Final answer
x = 169,553,799.79
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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.