Finding the Fourth Proportional to 138,476,101.68, 191,085,116.04 and 76,581,033.84
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Solution
The fourth proportional to 138,476,101.68, 191,085,116.04 and 76,581,033.84 is: 105,675,243.31
Step by Step Solution
- Step 1: Write the proportion equation
138,476,101.68 : 191,085,116.04 = 76,581,033.84 : x - Step 2: Convert to fraction form
138,476,101.68/191,085,116.04 = 76,581,033.84/x - Step 3: Cross multiply
138,476,101.68x = 191,085,116.04 × 76,581,033.84 - Step 4: Simplify right side
138,476,101.68x = 14,633,495,737,779,566 - Step 5: Solve for x
x = 14,633,495,737,779,566/138,476,101.68 - Step 6: Final answer
x = 105,675,243.31
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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.