Finding the Fourth Proportional to 153,921.70, 214,965.50 and 153,921.70
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Solution
The fourth proportional to 153,921.70, 214,965.50 and 153,921.70 is: 214,965.50
Step by Step Solution
- Step 1: Write the proportion equation
153,921.70 : 214,965.50 = 153,921.70 : x - Step 2: Convert to fraction form
153,921.70/214,965.50 = 153,921.70/x - Step 3: Cross multiply
153,921.70x = 214,965.50 × 153,921.70 - Step 4: Simplify right side
153,921.70x = 33,087,855,201.35 - Step 5: Solve for x
x = 33,087,855,201.35/153,921.70 - Step 6: Final answer
x = 214,965.50
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.