Finding the Fourth Proportional to 153,987.75, 212,503.10 and 83,331.75
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Solution
The fourth proportional to 153,987.75, 212,503.10 and 83,331.75 is: 114,997.82
Step by Step Solution
- Step 1: Write the proportion equation
153,987.75 : 212,503.10 = 83,331.75 : x - Step 2: Convert to fraction form
153,987.75/212,503.10 = 83,331.75/x - Step 3: Cross multiply
153,987.75x = 212,503.10 × 83,331.75 - Step 4: Simplify right side
153,987.75x = 17,708,254,786.77 - Step 5: Solve for x
x = 17,708,254,786.77/153,987.75 - Step 6: Final answer
x = 114,997.82
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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.