Finding the Fourth Proportional to 157,017.45, 216,685.10 and 85,397.99
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Solution
The fourth proportional to 157,017.45, 216,685.10 and 85,397.99 is: 117,849.78
Step by Step Solution
- Step 1: Write the proportion equation
157,017.45 : 216,685.10 = 85,397.99 : x - Step 2: Convert to fraction form
157,017.45/216,685.10 = 85,397.99/x - Step 3: Cross multiply
157,017.45x = 216,685.10 × 85,397.99 - Step 4: Simplify right side
157,017.45x = 18,504,472,002.95 - Step 5: Solve for x
x = 18,504,472,002.95/157,017.45 - Step 6: Final answer
x = 117,849.78
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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.