Finding the Fourth Proportional to 106,514,981.70, 159,772,472.55 and 84,991,621.20
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Solution
The fourth proportional to 106,514,981.70, 159,772,472.55 and 84,991,621.20 is: 127,487,431.80
Step by Step Solution
- Step 1: Write the proportion equation
106,514,981.70 : 159,772,472.55 = 84,991,621.20 : x - Step 2: Convert to fraction form
106,514,981.70/159,772,472.55 = 84,991,621.20/x - Step 3: Cross multiply
106,514,981.70x = 159,772,472.55 × 84,991,621.20 - Step 4: Simplify right side
106,514,981.70x = 13,579,321,465,157,000 - Step 5: Solve for x
x = 13,579,321,465,157,000/106,514,981.70 - Step 6: Final answer
x = 127,487,431.80
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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.