Finding the Fourth Proportional to 99,499.14, 137,318.49 and 74,304.90
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Solution
The fourth proportional to 99,499.14, 137,318.49 and 74,304.90 is: 102,547.99
Step by Step Solution
- Step 1: Write the proportion equation
99,499.14 : 137,318.49 = 74,304.90 : x - Step 2: Convert to fraction form
99,499.14/137,318.49 = 74,304.90/x - Step 3: Cross multiply
99,499.14x = 137,318.49 × 74,304.90 - Step 4: Simplify right side
99,499.14x = 10,203,436,667.60 - Step 5: Solve for x
x = 10,203,436,667.60/99,499.14 - Step 6: Final answer
x = 102,547.99
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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.