Finding the Fourth Proportional to 136,787,931.60, 188,765,929.08 and 74,062,950.72
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Solution
The fourth proportional to 136,787,931.60, 188,765,929.08 and 74,062,950.72 is: 102,206,105.02
Step by Step Solution
- Step 1: Write the proportion equation
136,787,931.60 : 188,765,929.08 = 74,062,950.72 : x - Step 2: Convert to fraction form
136,787,931.60/188,765,929.08 = 74,062,950.72/x - Step 3: Cross multiply
136,787,931.60x = 188,765,929.08 × 74,062,950.72 - Step 4: Simplify right side
136,787,931.60x = 13,980,561,703,067,056 - Step 5: Solve for x
x = 13,980,561,703,067,056/136,787,931.60 - Step 6: Final answer
x = 102,206,105.02
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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.