Finding the Fourth Proportional to 138,746.73, 207,784.75 and 79,402.49
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Solution
The fourth proportional to 138,746.73, 207,784.75 and 79,402.49 is: 118,911.82
Step by Step Solution
- Step 1: Write the proportion equation
138,746.73 : 207,784.75 = 79,402.49 : x - Step 2: Convert to fraction form
138,746.73/207,784.75 = 79,402.49/x - Step 3: Cross multiply
138,746.73x = 207,784.75 × 79,402.49 - Step 4: Simplify right side
138,746.73x = 16,498,626,534.03 - Step 5: Solve for x
x = 16,498,626,534.03/138,746.73 - Step 6: Final answer
x = 118,911.82
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.