Finding the Fourth Proportional to 197,889,805.95, 272,974,472.58 and 123,421,079.62
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Solution
The fourth proportional to 197,889,805.95, 272,974,472.58 and 123,421,079.62 is: 170,250,326.70
Step by Step Solution
- Step 1: Write the proportion equation
197,889,805.95 : 272,974,472.58 = 123,421,079.62 : x - Step 2: Convert to fraction form
197,889,805.95/272,974,472.58 = 123,421,079.62/x - Step 3: Cross multiply
197,889,805.95x = 272,974,472.58 × 123,421,079.62 - Step 4: Simplify right side
197,889,805.95x = 33,690,804,112,541,708 - Step 5: Solve for x
x = 33,690,804,112,541,708/197,889,805.95 - Step 6: Final answer
x = 170,250,326.70
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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.