Finding the Fourth Proportional to 141,605.51, 195,420.80 and 77,945.99
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Solution
The fourth proportional to 141,605.51, 195,420.80 and 77,945.99 is: 107,568.33
Step by Step Solution
- Step 1: Write the proportion equation
141,605.51 : 195,420.80 = 77,945.99 : x - Step 2: Convert to fraction form
141,605.51/195,420.80 = 77,945.99/x - Step 3: Cross multiply
141,605.51x = 195,420.80 × 77,945.99 - Step 4: Simplify right side
141,605.51x = 15,232,267,722.59 - Step 5: Solve for x
x = 15,232,267,722.59/141,605.51 - Step 6: Final answer
x = 107,568.33
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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.