Finding the Fourth Proportional to 157,095.20, 235,642.80 and 121,665.80
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Solution
The fourth proportional to 157,095.20, 235,642.80 and 121,665.80 is: 182,498.70
Step by Step Solution
- Step 1: Write the proportion equation
157,095.20 : 235,642.80 = 121,665.80 : x - Step 2: Convert to fraction form
157,095.20/235,642.80 = 121,665.80/x - Step 3: Cross multiply
157,095.20x = 235,642.80 × 121,665.80 - Step 4: Simplify right side
157,095.20x = 28,669,669,776.24 - Step 5: Solve for x
x = 28,669,669,776.24/157,095.20 - Step 6: Final answer
x = 182,498.70
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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.