Finding the Fourth Proportional to 154,687,942.36, 213,417,062.58 and 87,699,714.13
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Solution
The fourth proportional to 154,687,942.36, 213,417,062.58 and 87,699,714.13 is: 120,995,955.43
Step by Step Solution
- Step 1: Write the proportion equation
154,687,942.36 : 213,417,062.58 = 87,699,714.13 : x - Step 2: Convert to fraction form
154,687,942.36/213,417,062.58 = 87,699,714.13/x - Step 3: Cross multiply
154,687,942.36x = 213,417,062.58 × 87,699,714.13 - Step 4: Simplify right side
154,687,942.36x = 18,716,615,378,730,320 - Step 5: Solve for x
x = 18,716,615,378,730,320/154,687,942.36 - Step 6: Final answer
x = 120,995,955.43
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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.