Finding the Fourth Proportional to 121,931,975.19, 168,266,292.39 and 66,177,396.45
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Solution
The fourth proportional to 121,931,975.19, 168,266,292.39 and 66,177,396.45 is: 91,324,897.54
Step by Step Solution
- Step 1: Write the proportion equation
121,931,975.19 : 168,266,292.39 = 66,177,396.45 : x - Step 2: Convert to fraction form
121,931,975.19/168,266,292.39 = 66,177,396.45/x - Step 3: Cross multiply
121,931,975.19x = 168,266,292.39 × 66,177,396.45 - Step 4: Simplify right side
121,931,975.19x = 11,135,425,140,333,760 - Step 5: Solve for x
x = 11,135,425,140,333,760/121,931,975.19 - Step 6: Final answer
x = 91,324,897.54
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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.