Finding the Fourth Proportional to 121,932,017.64, 168,266,350.81 and 66,177,438.79
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Solution
The fourth proportional to 121,932,017.64, 168,266,350.81 and 66,177,438.79 is: 91,324,955.88
Step by Step Solution
- Step 1: Write the proportion equation
121,932,017.64 : 168,266,350.81 = 66,177,438.79 : x - Step 2: Convert to fraction form
121,932,017.64/168,266,350.81 = 66,177,438.79/x - Step 3: Cross multiply
121,932,017.64x = 168,266,350.81 × 66,177,438.79 - Step 4: Simplify right side
121,932,017.64x = 11,135,436,131,145,442 - Step 5: Solve for x
x = 11,135,436,131,145,442/121,932,017.64 - Step 6: Final answer
x = 91,324,955.88
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1.5x scale
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.