Finding the Fourth Proportional to 115,605.70, 173,408.55 and 74,133.70
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Solution
The fourth proportional to 115,605.70, 173,408.55 and 74,133.70 is: 111,200.55
Step by Step Solution
- Step 1: Write the proportion equation
115,605.70 : 173,408.55 = 74,133.70 : x - Step 2: Convert to fraction form
115,605.70/173,408.55 = 74,133.70/x - Step 3: Cross multiply
115,605.70x = 173,408.55 × 74,133.70 - Step 4: Simplify right side
115,605.70x = 12,855,417,423.14 - Step 5: Solve for x
x = 12,855,417,423.14/115,605.70 - Step 6: Final answer
x = 111,200.55
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1.5x scale
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.