Finding the Fourth Proportional to 128,082,823.32, 176,754,042.36 and 69,345,472.44
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Solution
The fourth proportional to 128,082,823.32, 176,754,042.36 and 69,345,472.44 is: 95,696,614.55
Step by Step Solution
- Step 1: Write the proportion equation
128,082,823.32 : 176,754,042.36 = 69,345,472.44 : x - Step 2: Convert to fraction form
128,082,823.32/176,754,042.36 = 69,345,472.44/x - Step 3: Cross multiply
128,082,823.32x = 176,754,042.36 × 69,345,472.44 - Step 4: Simplify right side
128,082,823.32x = 12,257,092,573,133,974 - Step 5: Solve for x
x = 12,257,092,573,133,974/128,082,823.32 - Step 6: Final answer
x = 95,696,614.55
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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.