Finding the Fourth Proportional to 153,677.48, 212,069.34 and 89,147.99
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Solution
The fourth proportional to 153,677.48, 212,069.34 and 89,147.99 is: 123,021.00
Step by Step Solution
- Step 1: Write the proportion equation
153,677.48 : 212,069.34 = 89,147.99 : x - Step 2: Convert to fraction form
153,677.48/212,069.34 = 89,147.99/x - Step 3: Cross multiply
153,677.48x = 212,069.34 × 89,147.99 - Step 4: Simplify right side
153,677.48x = 18,905,555,931.80 - Step 5: Solve for x
x = 18,905,555,931.80/153,677.48 - Step 6: Final answer
x = 123,021.00
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.