Finding the Fourth Proportional to 124,224,136.80, 186,336,205.20 and 78,986,479.20
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Solution
The fourth proportional to 124,224,136.80, 186,336,205.20 and 78,986,479.20 is: 118,479,718.80
Step by Step Solution
- Step 1: Write the proportion equation
124,224,136.80 : 186,336,205.20 = 78,986,479.20 : x - Step 2: Convert to fraction form
124,224,136.80/186,336,205.20 = 78,986,479.20/x - Step 3: Cross multiply
124,224,136.80x = 186,336,205.20 × 78,986,479.20 - Step 4: Simplify right side
124,224,136.80x = 14,718,040,796,236,732 - Step 5: Solve for x
x = 14,718,040,796,236,732/124,224,136.80 - Step 6: Final answer
x = 118,479,718.80
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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.