Finding the Fourth Proportional to 154,687,943.36, 213,417,063.96 and 87,699,715.13
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Solution
The fourth proportional to 154,687,943.36, 213,417,063.96 and 87,699,715.13 is: 120,995,956.81
Step by Step Solution
- Step 1: Write the proportion equation
154,687,943.36 : 213,417,063.96 = 87,699,715.13 : x - Step 2: Convert to fraction form
154,687,943.36/213,417,063.96 = 87,699,715.13/x - Step 3: Cross multiply
154,687,943.36x = 213,417,063.96 × 87,699,715.13 - Step 4: Simplify right side
154,687,943.36x = 18,716,615,713,172,988 - Step 5: Solve for x
x = 18,716,615,713,172,988/154,687,943.36 - Step 6: Final answer
x = 120,995,956.81
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.