Finding the Fourth Proportional to 153,819.51, 212,270.97 and 84,909.02
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Solution
The fourth proportional to 153,819.51, 212,270.97 and 84,909.02 is: 117,174.48
Step by Step Solution
- Step 1: Write the proportion equation
153,819.51 : 212,270.97 = 84,909.02 : x - Step 2: Convert to fraction form
153,819.51/212,270.97 = 84,909.02/x - Step 3: Cross multiply
153,819.51x = 212,270.97 × 84,909.02 - Step 4: Simplify right side
153,819.51x = 18,023,720,727.03 - Step 5: Solve for x
x = 18,023,720,727.03/153,819.51 - Step 6: Final answer
x = 117,174.48
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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.