Finding the Fourth Proportional to 153,178,268.24, 211,357,099.78 and 91,304,364.08
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Solution
The fourth proportional to 153,178,268.24, 211,357,099.78 and 91,304,364.08 is: 125,982,789.93
Step by Step Solution
- Step 1: Write the proportion equation
153,178,268.24 : 211,357,099.78 = 91,304,364.08 : x - Step 2: Convert to fraction form
153,178,268.24/211,357,099.78 = 91,304,364.08/x - Step 3: Cross multiply
153,178,268.24x = 211,357,099.78 × 91,304,364.08 - Step 4: Simplify right side
153,178,268.24x = 19,297,825,589,206,008 - Step 5: Solve for x
x = 19,297,825,589,206,008/153,178,268.24 - Step 6: Final answer
x = 125,982,789.93
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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.