Finding the Fourth Proportional to 121,639,178.64, 167,860,730.16 and 65,883,211.92
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Solution
The fourth proportional to 121,639,178.64, 167,860,730.16 and 65,883,211.92 is: 90,918,108.64
Step by Step Solution
- Step 1: Write the proportion equation
121,639,178.64 : 167,860,730.16 = 65,883,211.92 : x - Step 2: Convert to fraction form
121,639,178.64/167,860,730.16 = 65,883,211.92/x - Step 3: Cross multiply
121,639,178.64x = 167,860,730.16 × 65,883,211.92 - Step 4: Simplify right side
121,639,178.64x = 11,059,204,058,177,216 - Step 5: Solve for x
x = 11,059,204,058,177,216/121,639,178.64 - Step 6: Final answer
x = 90,918,108.64
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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.