Finding the Fourth Proportional to 134,498.45, 185,608.42 and 77,139.99
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Solution
The fourth proportional to 134,498.45, 185,608.42 and 77,139.99 is: 106,453.50
Step by Step Solution
- Step 1: Write the proportion equation
134,498.45 : 185,608.42 = 77,139.99 : x - Step 2: Convert to fraction form
134,498.45/185,608.42 = 77,139.99/x - Step 3: Cross multiply
134,498.45x = 185,608.42 × 77,139.99 - Step 4: Simplify right side
134,498.45x = 14,317,830,348.97 - Step 5: Solve for x
x = 14,317,830,348.97/134,498.45 - Step 6: Final answer
x = 106,453.50
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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.