Finding the Fourth Proportional to 161,727.20, 242,590.80 and 157,119.20
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Solution
The fourth proportional to 161,727.20, 242,590.80 and 157,119.20 is: 235,678.80
Step by Step Solution
- Step 1: Write the proportion equation
161,727.20 : 242,590.80 = 157,119.20 : x - Step 2: Convert to fraction form
161,727.20/242,590.80 = 157,119.20/x - Step 3: Cross multiply
161,727.20x = 242,590.80 × 157,119.20 - Step 4: Simplify right side
161,727.20x = 38,115,672,423.36 - Step 5: Solve for x
x = 38,115,672,423.36/161,727.20 - Step 6: Final answer
x = 235,678.80
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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.