Finding the Fourth Proportional to 99,487.21, 137,291.51 and 54,165.08
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Solution
The fourth proportional to 99,487.21, 137,291.51 and 54,165.08 is: 74,747.34
Step by Step Solution
- Step 1: Write the proportion equation
99,487.21 : 137,291.51 = 54,165.08 : x - Step 2: Convert to fraction form
99,487.21/137,291.51 = 54,165.08/x - Step 3: Cross multiply
99,487.21x = 137,291.51 × 54,165.08 - Step 4: Simplify right side
99,487.21x = 7,436,404,665.19 - Step 5: Solve for x
x = 7,436,404,665.19/99,487.21 - Step 6: Final answer
x = 74,747.34
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1.5x scale
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.