Finding the Fourth Proportional to 122,909.18, 169,603.76 and 68,457.20
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Solution
The fourth proportional to 122,909.18, 169,603.76 and 68,457.20 is: 94,464.86
Step by Step Solution
- Step 1: Write the proportion equation
122,909.18 : 169,603.76 = 68,457.20 : x - Step 2: Convert to fraction form
122,909.18/169,603.76 = 68,457.20/x - Step 3: Cross multiply
122,909.18x = 169,603.76 × 68,457.20 - Step 4: Simplify right side
122,909.18x = 11,610,598,519.07 - Step 5: Solve for x
x = 11,610,598,519.07/122,909.18 - Step 6: Final answer
x = 94,464.86
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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.