Finding the Fourth Proportional to 144,219.48, 199,018.99 and 78,805.70
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Solution
The fourth proportional to 144,219.48, 199,018.99 and 78,805.70 is: 108,749.74
Step by Step Solution
- Step 1: Write the proportion equation
144,219.48 : 199,018.99 = 78,805.70 : x - Step 2: Convert to fraction form
144,219.48/199,018.99 = 78,805.70/x - Step 3: Cross multiply
144,219.48x = 199,018.99 × 78,805.70 - Step 4: Simplify right side
144,219.48x = 15,683,830,820.24 - Step 5: Solve for x
x = 15,683,830,820.24/144,219.48 - Step 6: Final answer
x = 108,749.74
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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.