Finding the Fourth Proportional to 121,931,974.69, 168,266,291.70 and 66,177,395.96
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Solution
The fourth proportional to 121,931,974.69, 168,266,291.70 and 66,177,395.96 is: 91,324,896.86
Step by Step Solution
- Step 1: Write the proportion equation
121,931,974.69 : 168,266,291.70 = 66,177,395.96 : x - Step 2: Convert to fraction form
121,931,974.69/168,266,291.70 = 66,177,395.96/x - Step 3: Cross multiply
121,931,974.69x = 168,266,291.70 × 66,177,395.96 - Step 4: Simplify right side
121,931,974.69x = 11,135,425,012,274,094 - Step 5: Solve for x
x = 11,135,425,012,274,094/121,931,974.69 - Step 6: Final answer
x = 91,324,896.86
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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.