Finding the Fourth Proportional to 157,128.21, 235,590.89 and 67,229.59
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Solution
The fourth proportional to 157,128.21, 235,590.89 and 67,229.59 is: 100,800.99
Step by Step Solution
- Step 1: Write the proportion equation
157,128.21 : 235,590.89 = 67,229.59 : x - Step 2: Convert to fraction form
157,128.21/235,590.89 = 67,229.59/x - Step 3: Cross multiply
157,128.21x = 235,590.89 × 67,229.59 - Step 4: Simplify right side
157,128.21x = 15,838,678,521.53 - Step 5: Solve for x
x = 15,838,678,521.53/157,128.21 - Step 6: Final answer
x = 100,800.99
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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.