Finding the Fourth Proportional to 168,420,645.20, 252,134,956.20 and 125,480,212.40
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Solution
The fourth proportional to 168,420,645.20, 252,134,956.20 and 125,480,212.40 is: 187,850,769.84
Step by Step Solution
- Step 1: Write the proportion equation
168,420,645.20 : 252,134,956.20 = 125,480,212.40 : x - Step 2: Convert to fraction form
168,420,645.20/252,134,956.20 = 125,480,212.40/x - Step 3: Cross multiply
168,420,645.20x = 252,134,956.20 × 125,480,212.40 - Step 4: Simplify right side
168,420,645.20x = 31,637,947,857,440,696 - Step 5: Solve for x
x = 31,637,947,857,440,696/168,420,645.20 - Step 6: Final answer
x = 187,850,769.84
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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.