Finding the Fourth Proportional to 156,636,434.68, 215,942,288.68 and 124,954,136.79
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Solution
The fourth proportional to 156,636,434.68, 215,942,288.68 and 124,954,136.79 is: 172,264,405.36
Step by Step Solution
- Step 1: Write the proportion equation
156,636,434.68 : 215,942,288.68 = 124,954,136.79 : x - Step 2: Convert to fraction form
156,636,434.68/215,942,288.68 = 124,954,136.79/x - Step 3: Cross multiply
156,636,434.68x = 215,942,288.68 × 124,954,136.79 - Step 4: Simplify right side
156,636,434.68x = 26,982,882,278,525,752 - Step 5: Solve for x
x = 26,982,882,278,525,752/156,636,434.68 - Step 6: Final answer
x = 172,264,405.36
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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.