Finding the Fourth Proportional to 128,897,953.36, 193,345,036.76 and 31,853,658.65
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Solution
The fourth proportional to 128,897,953.36, 193,345,036.76 and 31,853,658.65 is: 47,780,020.10
Step by Step Solution
- Step 1: Write the proportion equation
128,897,953.36 : 193,345,036.76 = 31,853,658.65 : x - Step 2: Convert to fraction form
128,897,953.36/193,345,036.76 = 31,853,658.65/x - Step 3: Cross multiply
128,897,953.36x = 193,345,036.76 × 31,853,658.65 - Step 4: Simplify right side
128,897,953.36x = 6,158,746,801,737,650 - Step 5: Solve for x
x = 6,158,746,801,737,650/128,897,953.36 - Step 6: Final answer
x = 47,780,020.10
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.