Finding the Fourth Proportional to 156,830,530.20, 235,245,795.30 and 99,576,619.80
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Solution
The fourth proportional to 156,830,530.20, 235,245,795.30 and 99,576,619.80 is: 149,364,929.70
Step by Step Solution
- Step 1: Write the proportion equation
156,830,530.20 : 235,245,795.30 = 99,576,619.80 : x - Step 2: Convert to fraction form
156,830,530.20/235,245,795.30 = 99,576,619.80/x - Step 3: Cross multiply
156,830,530.20x = 235,245,795.30 × 99,576,619.80 - Step 4: Simplify right side
156,830,530.20x = 23,424,981,118,136,728 - Step 5: Solve for x
x = 23,424,981,118,136,728/156,830,530.20 - Step 6: Final answer
x = 149,364,929.70
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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.