Finding the Fourth Proportional to 157,781,198.16, 217,733,875.20 and 88,167,151.08
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Solution
The fourth proportional to 157,781,198.16, 217,733,875.20 and 88,167,151.08 is: 121,668,333.70
Step by Step Solution
- Step 1: Write the proportion equation
157,781,198.16 : 217,733,875.20 = 88,167,151.08 : x - Step 2: Convert to fraction form
157,781,198.16/217,733,875.20 = 88,167,151.08/x - Step 3: Cross multiply
157,781,198.16x = 217,733,875.20 × 88,167,151.08 - Step 4: Simplify right side
157,781,198.16x = 19,196,975,469,992,264 - Step 5: Solve for x
x = 19,196,975,469,992,264/157,781,198.16 - Step 6: Final answer
x = 121,668,333.70
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.