Finding the Fourth Proportional to 172,011.99, 257,915.79 and 65,403.75
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Solution
The fourth proportional to 172,011.99, 257,915.79 and 65,403.75 is: 98,066.77
Step by Step Solution
- Step 1: Write the proportion equation
172,011.99 : 257,915.79 = 65,403.75 : x - Step 2: Convert to fraction form
172,011.99/257,915.79 = 65,403.75/x - Step 3: Cross multiply
172,011.99x = 257,915.79 × 65,403.75 - Step 4: Simplify right side
172,011.99x = 16,868,659,523.19 - Step 5: Solve for x
x = 16,868,659,523.19/172,011.99 - Step 6: Final answer
x = 98,066.77
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.