Finding the Fourth Proportional to 118,987.56, 164,204.10 and 65,272.68
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Solution
The fourth proportional to 118,987.56, 164,204.10 and 65,272.68 is: 90,076.99
Step by Step Solution
- Step 1: Write the proportion equation
118,987.56 : 164,204.10 = 65,272.68 : x - Step 2: Convert to fraction form
118,987.56/164,204.10 = 65,272.68/x - Step 3: Cross multiply
118,987.56x = 164,204.10 × 65,272.68 - Step 4: Simplify right side
118,987.56x = 10,718,041,673.99 - Step 5: Solve for x
x = 10,718,041,673.99/118,987.56 - Step 6: Final answer
x = 90,076.99
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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.