Finding the Fourth Proportional to 121,916,098.16, 168,244,655.92 and 66,161,506.44
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Solution
The fourth proportional to 121,916,098.16, 168,244,655.92 and 66,161,506.44 is: 91,303,117.92
Step by Step Solution
- Step 1: Write the proportion equation
121,916,098.16 : 168,244,655.92 = 66,161,506.44 : x - Step 2: Convert to fraction form
121,916,098.16/168,244,655.92 = 66,161,506.44/x - Step 3: Cross multiply
121,916,098.16x = 168,244,655.92 × 66,161,506.44 - Step 4: Simplify right side
121,916,098.16x = 11,131,319,886,146,662 - Step 5: Solve for x
x = 11,131,319,886,146,662/121,916,098.16 - Step 6: Final answer
x = 91,303,117.92
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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.