Finding the Fourth Proportional to 121,133,036.55, 167,162,740.06 and 66,128,893.05
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Solution
The fourth proportional to 121,133,036.55, 167,162,740.06 and 66,128,893.05 is: 91,257,408.17
Step by Step Solution
- Step 1: Write the proportion equation
121,133,036.55 : 167,162,740.06 = 66,128,893.05 : x - Step 2: Convert to fraction form
121,133,036.55/167,162,740.06 = 66,128,893.05/x - Step 3: Cross multiply
121,133,036.55x = 167,162,740.06 × 66,128,893.05 - Step 4: Simplify right side
121,133,036.55x = 11,054,286,959,372,690 - Step 5: Solve for x
x = 11,054,286,959,372,690/121,133,036.55 - Step 6: Final answer
x = 91,257,408.17
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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.