Finding the Fourth Proportional to 157,038.36, 216,706.74 and 85,418.28
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Solution
The fourth proportional to 157,038.36, 216,706.74 and 85,418.28 is: 117,873.86
Step by Step Solution
- Step 1: Write the proportion equation
157,038.36 : 216,706.74 = 85,418.28 : x - Step 2: Convert to fraction form
157,038.36/216,706.74 = 85,418.28/x - Step 3: Cross multiply
157,038.36x = 216,706.74 × 85,418.28 - Step 4: Simplify right side
157,038.36x = 18,510,716,995.21 - Step 5: Solve for x
x = 18,510,716,995.21/157,038.36 - Step 6: Final answer
x = 117,873.86
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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.