Finding the Fourth Proportional to 118,154.51, 162,961.03 and 75,716.99
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Solution
The fourth proportional to 118,154.51, 162,961.03 and 75,716.99 is: 104,430.37
Step by Step Solution
- Step 1: Write the proportion equation
118,154.51 : 162,961.03 = 75,716.99 : x - Step 2: Convert to fraction form
118,154.51/162,961.03 = 75,716.99/x - Step 3: Cross multiply
118,154.51x = 162,961.03 × 75,716.99 - Step 4: Simplify right side
118,154.51x = 12,338,918,678.90 - Step 5: Solve for x
x = 12,338,918,678.90/118,154.51 - Step 6: Final answer
x = 104,430.37
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1.5x scale
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.