Finding the Fourth Proportional to 115,912,209.30, 173,868,313.95 and 85,301,207.70
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Solution
The fourth proportional to 115,912,209.30, 173,868,313.95 and 85,301,207.70 is: 127,951,811.55
Step by Step Solution
- Step 1: Write the proportion equation
115,912,209.30 : 173,868,313.95 = 85,301,207.70 : x - Step 2: Convert to fraction form
115,912,209.30/173,868,313.95 = 85,301,207.70/x - Step 3: Cross multiply
115,912,209.30x = 173,868,313.95 × 85,301,207.70 - Step 4: Simplify right side
115,912,209.30x = 14,831,177,160,697,756 - Step 5: Solve for x
x = 14,831,177,160,697,756/115,912,209.30 - Step 6: Final answer
x = 127,951,811.55
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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.