Finding the Fourth Proportional to 121,378,889.40, 182,068,334.10 and 48,606,901.80
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Solution
The fourth proportional to 121,378,889.40, 182,068,334.10 and 48,606,901.80 is: 72,910,352.70
Step by Step Solution
- Step 1: Write the proportion equation
121,378,889.40 : 182,068,334.10 = 48,606,901.80 : x - Step 2: Convert to fraction form
121,378,889.40/182,068,334.10 = 48,606,901.80/x - Step 3: Cross multiply
121,378,889.40x = 182,068,334.10 × 48,606,901.80 - Step 4: Simplify right side
121,378,889.40x = 8,849,777,636,488,291 - Step 5: Solve for x
x = 8,849,777,636,488,291/121,378,889.40 - Step 6: Final answer
x = 72,910,352.70
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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.