Finding the Fourth Proportional to 154,243,715.96, 212,856,740.60 and 83,679,325.97
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Solution
The fourth proportional to 154,243,715.96, 212,856,740.60 and 83,679,325.97 is: 115,477,693.67
Step by Step Solution
- Step 1: Write the proportion equation
154,243,715.96 : 212,856,740.60 = 83,679,325.97 : x - Step 2: Convert to fraction form
154,243,715.96/212,856,740.60 = 83,679,325.97/x - Step 3: Cross multiply
154,243,715.96x = 212,856,740.60 × 83,679,325.97 - Step 4: Simplify right side
154,243,715.96x = 17,811,708,581,579,132 - Step 5: Solve for x
x = 17,811,708,581,579,132/154,243,715.96 - Step 6: Final answer
x = 115,477,693.67
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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.