Finding the Fourth Proportional to 97,768.99, 134,851.51 and 89,728.56
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Solution
The fourth proportional to 97,768.99, 134,851.51 and 89,728.56 is: 123,761.45
Step by Step Solution
- Step 1: Write the proportion equation
97,768.99 : 134,851.51 = 89,728.56 : x - Step 2: Convert to fraction form
97,768.99/134,851.51 = 89,728.56/x - Step 3: Cross multiply
97,768.99x = 134,851.51 × 89,728.56 - Step 4: Simplify right side
97,768.99x = 12,100,031,806.13 - Step 5: Solve for x
x = 12,100,031,806.13/97,768.99 - Step 6: Final answer
x = 123,761.45
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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.