Finding the Fourth Proportional to 133,078.12, 183,645.06 and 72,649.96
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Solution
The fourth proportional to 133,078.12, 183,645.06 and 72,649.96 is: 100,255.45
Step by Step Solution
- Step 1: Write the proportion equation
133,078.12 : 183,645.06 = 72,649.96 : x - Step 2: Convert to fraction form
133,078.12/183,645.06 = 72,649.96/x - Step 3: Cross multiply
133,078.12x = 183,645.06 × 72,649.96 - Step 4: Simplify right side
133,078.12x = 13,341,806,263.20 - Step 5: Solve for x
x = 13,341,806,263.20/133,078.12 - Step 6: Final answer
x = 100,255.45
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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.