Finding the Fourth Proportional to 166,920.13, 230,430.99 and 112,485.70
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Solution
The fourth proportional to 166,920.13, 230,430.99 and 112,485.70 is: 155,284.99
Step by Step Solution
- Step 1: Write the proportion equation
166,920.13 : 230,430.99 = 112,485.70 : x - Step 2: Convert to fraction form
166,920.13/230,430.99 = 112,485.70/x - Step 3: Cross multiply
166,920.13x = 230,430.99 × 112,485.70 - Step 4: Simplify right side
166,920.13x = 25,920,191,211.84 - Step 5: Solve for x
x = 25,920,191,211.84/166,920.13 - Step 6: Final answer
x = 155,284.99
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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.