Finding the Fourth Proportional to 111,261.24, 153,459.18 and 81,055.80
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Solution
The fourth proportional to 111,261.24, 153,459.18 and 81,055.80 is: 111,797.75
Step by Step Solution
- Step 1: Write the proportion equation
111,261.24 : 153,459.18 = 81,055.80 : x - Step 2: Convert to fraction form
111,261.24/153,459.18 = 81,055.80/x - Step 3: Cross multiply
111,261.24x = 153,459.18 × 81,055.80 - Step 4: Simplify right side
111,261.24x = 12,438,756,602.24 - Step 5: Solve for x
x = 12,438,756,602.24/111,261.24 - Step 6: Final answer
x = 111,797.75
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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.