Finding the Fourth Proportional to 111,622,277.80, 167,433,416.70 and 81,389,189.80
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Solution
The fourth proportional to 111,622,277.80, 167,433,416.70 and 81,389,189.80 is: 122,083,784.70
Step by Step Solution
- Step 1: Write the proportion equation
111,622,277.80 : 167,433,416.70 = 81,389,189.80 : x - Step 2: Convert to fraction form
111,622,277.80/167,433,416.70 = 81,389,189.80/x - Step 3: Cross multiply
111,622,277.80x = 167,433,416.70 × 81,389,189.80 - Step 4: Simplify right side
111,622,277.80x = 13,627,270,130,658,788 - Step 5: Solve for x
x = 13,627,270,130,658,788/111,622,277.80 - Step 6: Final answer
x = 122,083,784.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.