Finding the Fourth Proportional to 123,288,850.84, 170,074,109.76 and 76,230,881.68
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Solution
The fourth proportional to 123,288,850.84, 170,074,109.76 and 76,230,881.68 is: 105,158,732.92
Step by Step Solution
- Step 1: Write the proportion equation
123,288,850.84 : 170,074,109.76 = 76,230,881.68 : x - Step 2: Convert to fraction form
123,288,850.84/170,074,109.76 = 76,230,881.68/x - Step 3: Cross multiply
123,288,850.84x = 170,074,109.76 × 76,230,881.68 - Step 4: Simplify right side
123,288,850.84x = 12,964,899,337,945,894 - Step 5: Solve for x
x = 12,964,899,337,945,894/123,288,850.84 - Step 6: Final answer
x = 105,158,732.92
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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.