Finding the Fourth Proportional to 111,918.08, 154,448.70 and 61,617.08
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Solution
The fourth proportional to 111,918.08, 154,448.70 and 61,617.08 is: 85,032.53
Step by Step Solution
- Step 1: Write the proportion equation
111,918.08 : 154,448.70 = 61,617.08 : x - Step 2: Convert to fraction form
111,918.08/154,448.70 = 61,617.08/x - Step 3: Cross multiply
111,918.08x = 154,448.70 × 61,617.08 - Step 4: Simplify right side
111,918.08x = 9,516,677,903.80 - Step 5: Solve for x
x = 9,516,677,903.80/111,918.08 - Step 6: Final answer
x = 85,032.53
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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.