Finding the Fourth Proportional to 122,769.32, 169,420.43 and 68,320.56
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Solution
The fourth proportional to 122,769.32, 169,420.43 and 68,320.56 is: 94,281.70
Step by Step Solution
- Step 1: Write the proportion equation
122,769.32 : 169,420.43 = 68,320.56 : x - Step 2: Convert to fraction form
122,769.32/169,420.43 = 68,320.56/x - Step 3: Cross multiply
122,769.32x = 169,420.43 × 68,320.56 - Step 4: Simplify right side
122,769.32x = 11,574,899,459.17 - Step 5: Solve for x
x = 11,574,899,459.17/122,769.32 - Step 6: Final answer
x = 94,281.70
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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.