Finding the Fourth Proportional to 119,178.90, 164,457.09 and 65,461.14
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Solution
The fourth proportional to 119,178.90, 164,457.09 and 65,461.14 is: 90,330.99
Step by Step Solution
- Step 1: Write the proportion equation
119,178.90 : 164,457.09 = 65,461.14 : x - Step 2: Convert to fraction form
119,178.90/164,457.09 = 65,461.14/x - Step 3: Cross multiply
119,178.90x = 164,457.09 × 65,461.14 - Step 4: Simplify right side
119,178.90x = 10,765,548,592.48 - Step 5: Solve for x
x = 10,765,548,592.48/119,178.90 - Step 6: Final answer
x = 90,330.99
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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.