Finding the Fourth Proportional to 157,017.98, 216,685.84 and 85,398.53
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Solution
The fourth proportional to 157,017.98, 216,685.84 and 85,398.53 is: 117,850.52
Step by Step Solution
- Step 1: Write the proportion equation
157,017.98 : 216,685.84 = 85,398.53 : x - Step 2: Convert to fraction form
157,017.98/216,685.84 = 85,398.53/x - Step 3: Cross multiply
157,017.98x = 216,685.84 × 85,398.53 - Step 4: Simplify right side
157,017.98x = 18,504,651,071.01 - Step 5: Solve for x
x = 18,504,651,071.01/157,017.98 - Step 6: Final answer
x = 117,850.52
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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.