Finding the Fourth Proportional to 163,556,721.20, 245,335,081.80 and 98,986,639.70
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Solution
The fourth proportional to 163,556,721.20, 245,335,081.80 and 98,986,639.70 is: 148,479,959.55
Step by Step Solution
- Step 1: Write the proportion equation
163,556,721.20 : 245,335,081.80 = 98,986,639.70 : x - Step 2: Convert to fraction form
163,556,721.20/245,335,081.80 = 98,986,639.70/x - Step 3: Cross multiply
163,556,721.20x = 245,335,081.80 × 98,986,639.70 - Step 4: Simplify right side
163,556,721.20x = 24,284,895,347,906,628 - Step 5: Solve for x
x = 24,284,895,347,906,628/163,556,721.20 - Step 6: Final answer
x = 148,479,959.55
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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.