Finding the Fourth Proportional to 147,487,653.20, 221,231,479.80 and 79,463,205.20
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Solution
The fourth proportional to 147,487,653.20, 221,231,479.80 and 79,463,205.20 is: 119,194,807.80
Step by Step Solution
- Step 1: Write the proportion equation
147,487,653.20 : 221,231,479.80 = 79,463,205.20 : x - Step 2: Convert to fraction form
147,487,653.20/221,231,479.80 = 79,463,205.20/x - Step 3: Cross multiply
147,487,653.20x = 221,231,479.80 × 79,463,205.20 - Step 4: Simplify right side
147,487,653.20x = 17,579,762,476,047,056 - Step 5: Solve for x
x = 17,579,762,476,047,056/147,487,653.20 - Step 6: Final answer
x = 119,194,807.80
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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.