Finding the Fourth Proportional to 122,760.84, 169,404.36 and 68,315.70
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Solution
The fourth proportional to 122,760.84, 169,404.36 and 68,315.70 is: 94,272.55
Step by Step Solution
- Step 1: Write the proportion equation
122,760.84 : 169,404.36 = 68,315.70 : x - Step 2: Convert to fraction form
122,760.84/169,404.36 = 68,315.70/x - Step 3: Cross multiply
122,760.84x = 169,404.36 × 68,315.70 - Step 4: Simplify right side
122,760.84x = 11,572,977,436.45 - Step 5: Solve for x
x = 11,572,977,436.45/122,760.84 - Step 6: Final answer
x = 94,272.55
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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.