Finding the Fourth Proportional to 111,155.68, 153,409.44 and 63,398.08
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Solution
The fourth proportional to 111,155.68, 153,409.44 and 63,398.08 is: 87,497.68
Step by Step Solution
- Step 1: Write the proportion equation
111,155.68 : 153,409.44 = 63,398.08 : x - Step 2: Convert to fraction form
111,155.68/153,409.44 = 63,398.08/x - Step 3: Cross multiply
111,155.68x = 153,409.44 × 63,398.08 - Step 4: Simplify right side
111,155.68x = 9,725,863,949.88 - Step 5: Solve for x
x = 9,725,863,949.88/111,155.68 - Step 6: Final answer
x = 87,497.68
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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.