Finding the Fourth Proportional to 86,488,514,611.20, 129,685,478,428.58 and 68,675,319,676.35
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Solution
The fourth proportional to 86,488,514,611.20, 129,685,478,428.58 and 68,675,319,676.35 is: 102,975,426,604.33
Step by Step Solution
- Step 1: Write the proportion equation
86,488,514,611.20 : 129,685,478,428.58 = 68,675,319,676.35 : x - Step 2: Convert to fraction form
86,488,514,611.20/129,685,478,428.58 = 68,675,319,676.35/x - Step 3: Cross multiply
86,488,514,611.20x = 129,685,478,428.58 × 68,675,319,676.35 - Step 4: Simplify right side
86,488,514,611.20x = 8,906,191,688,463,123,742,720 - Step 5: Solve for x
x = 8,906,191,688,463,123,742,720/86,488,514,611.20 - Step 6: Final answer
x = 102,975,426,604.33
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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.