Finding the Fourth Proportional to 75,423.70, 113,135.55 and 74,127.70
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Solution
The fourth proportional to 75,423.70, 113,135.55 and 74,127.70 is: 111,191.55
Step by Step Solution
- Step 1: Write the proportion equation
75,423.70 : 113,135.55 = 74,127.70 : x - Step 2: Convert to fraction form
75,423.70/113,135.55 = 74,127.70/x - Step 3: Cross multiply
75,423.70x = 113,135.55 × 74,127.70 - Step 4: Simplify right side
75,423.70x = 8,386,478,109.74 - Step 5: Solve for x
x = 8,386,478,109.74/75,423.70 - Step 6: Final answer
x = 111,191.55
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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.