Finding the Fourth Proportional to 161,419,246.40, 242,128,869.60 and 138,744,430.40
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Solution
The fourth proportional to 161,419,246.40, 242,128,869.60 and 138,744,430.40 is: 208,116,645.60
Step by Step Solution
- Step 1: Write the proportion equation
161,419,246.40 : 242,128,869.60 = 138,744,430.40 : x - Step 2: Convert to fraction form
161,419,246.40/242,128,869.60 = 138,744,430.40/x - Step 3: Cross multiply
161,419,246.40x = 242,128,869.60 × 138,744,430.40 - Step 4: Simplify right side
161,419,246.40x = 33,594,032,096,047,876 - Step 5: Solve for x
x = 33,594,032,096,047,876/161,419,246.40 - Step 6: Final answer
x = 208,116,645.60
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.