Finding the Fourth Proportional to 121,133,037.36, 167,162,741.18 and 66,128,893.86
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Solution
The fourth proportional to 121,133,037.36, 167,162,741.18 and 66,128,893.86 is: 91,257,409.29
Step by Step Solution
- Step 1: Write the proportion equation
121,133,037.36 : 167,162,741.18 = 66,128,893.86 : x - Step 2: Convert to fraction form
121,133,037.36/167,162,741.18 = 66,128,893.86/x - Step 3: Cross multiply
121,133,037.36x = 167,162,741.18 × 66,128,893.86 - Step 4: Simplify right side
121,133,037.36x = 11,054,287,168,838,872 - Step 5: Solve for x
x = 11,054,287,168,838,872/121,133,037.36 - Step 6: Final answer
x = 91,257,409.29
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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.