Finding the Fourth Proportional to 212,889,990.12, 293,732,668.34 and 124,736,623.80
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Solution
The fourth proportional to 212,889,990.12, 293,732,668.34 and 124,736,623.80 is: 172,104,011.69
Step by Step Solution
- Step 1: Write the proportion equation
212,889,990.12 : 293,732,668.34 = 124,736,623.80 : x - Step 2: Convert to fraction form
212,889,990.12/293,732,668.34 = 124,736,623.80/x - Step 3: Cross multiply
212,889,990.12x = 293,732,668.34 × 124,736,623.80 - Step 4: Simplify right side
212,889,990.12x = 36,639,221,348,496,744 - Step 5: Solve for x
x = 36,639,221,348,496,744/212,889,990.12 - Step 6: Final answer
x = 172,104,011.69
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.