Finding the Fourth Proportional to 195,418,976.80, 293,128,465.20 and 99,668,423.20
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Solution
The fourth proportional to 195,418,976.80, 293,128,465.20 and 99,668,423.20 is: 149,502,634.80
Step by Step Solution
- Step 1: Write the proportion equation
195,418,976.80 : 293,128,465.20 = 99,668,423.20 : x - Step 2: Convert to fraction form
195,418,976.80/293,128,465.20 = 99,668,423.20/x - Step 3: Cross multiply
195,418,976.80x = 293,128,465.20 × 99,668,423.20 - Step 4: Simplify right side
195,418,976.80x = 29,215,651,921,520,072 - Step 5: Solve for x
x = 29,215,651,921,520,072/195,418,976.80 - Step 6: Final answer
x = 149,502,634.80
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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.