Finding the Fourth Proportional to 191,685,404.70, 287,528,107.05 and 76,752,431.10
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Solution
The fourth proportional to 191,685,404.70, 287,528,107.05 and 76,752,431.10 is: 115,128,646.65
Step by Step Solution
- Step 1: Write the proportion equation
191,685,404.70 : 287,528,107.05 = 76,752,431.10 : x - Step 2: Convert to fraction form
191,685,404.70/287,528,107.05 = 76,752,431.10/x - Step 3: Cross multiply
191,685,404.70x = 287,528,107.05 × 76,752,431.10 - Step 4: Simplify right side
191,685,404.70x = 22,068,481,225,668,548 - Step 5: Solve for x
x = 22,068,481,225,668,548/191,685,404.70 - Step 6: Final answer
x = 115,128,646.65
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1.5x scale
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.