Finding the Fourth Proportional to 165,720.18, 228,693.74 and 90,268.68
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Solution
The fourth proportional to 165,720.18, 228,693.74 and 90,268.68 is: 124,570.72
Step by Step Solution
- Step 1: Write the proportion equation
165,720.18 : 228,693.74 = 90,268.68 : x - Step 2: Convert to fraction form
165,720.18/228,693.74 = 90,268.68/x - Step 3: Cross multiply
165,720.18x = 228,693.74 × 90,268.68 - Step 4: Simplify right side
165,720.18x = 20,643,882,034.06 - Step 5: Solve for x
x = 20,643,882,034.06/165,720.18 - Step 6: Final answer
x = 124,570.72
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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.