Finding the Fourth Proportional to 141,173,449.05, 194,825,216.76 and 78,449,312.79
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Solution
The fourth proportional to 141,173,449.05, 194,825,216.76 and 78,449,312.79 is: 108,263,306.39
Step by Step Solution
- Step 1: Write the proportion equation
141,173,449.05 : 194,825,216.76 = 78,449,312.79 : x - Step 2: Convert to fraction form
141,173,449.05/194,825,216.76 = 78,449,312.79/x - Step 3: Cross multiply
141,173,449.05x = 194,825,216.76 × 78,449,312.79 - Step 4: Simplify right side
141,173,449.05x = 15,283,904,368,984,790 - Step 5: Solve for x
x = 15,283,904,368,984,790/141,173,449.05 - Step 6: Final answer
x = 108,263,306.39
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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.