Finding the Fourth Proportional to 129,247,430.70, 193,965,624.45 and 90,983,678.70
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Solution
The fourth proportional to 129,247,430.70, 193,965,624.45 and 90,983,678.70 is: 136,542,026.08
Step by Step Solution
- Step 1: Write the proportion equation
129,247,430.70 : 193,965,624.45 = 90,983,678.70 : x - Step 2: Convert to fraction form
129,247,430.70/193,965,624.45 = 90,983,678.70/x - Step 3: Cross multiply
129,247,430.70x = 193,965,624.45 × 90,983,678.70 - Step 4: Simplify right side
129,247,430.70x = 17,647,706,053,803,664 - Step 5: Solve for x
x = 17,647,706,053,803,664/129,247,430.70 - Step 6: Final answer
x = 136,542,026.08
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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.