Finding the Fourth Proportional to 165,930.12, 228,983.82 and 90,478.62
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Solution
The fourth proportional to 165,930.12, 228,983.82 and 90,478.62 is: 124,860.63
Step by Step Solution
- Step 1: Write the proportion equation
165,930.12 : 228,983.82 = 90,478.62 : x - Step 2: Convert to fraction form
165,930.12/228,983.82 = 90,478.62/x - Step 3: Cross multiply
165,930.12x = 228,983.82 × 90,478.62 - Step 4: Simplify right side
165,930.12x = 20,718,140,035.93 - Step 5: Solve for x
x = 20,718,140,035.93/165,930.12 - Step 6: Final answer
x = 124,860.63
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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.