Finding the Fourth Proportional to 111,422.93, 153,774.14 and 63,666.99
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Solution
The fourth proportional to 111,422.93, 153,774.14 and 63,666.99 is: 87,866.45
Step by Step Solution
- Step 1: Write the proportion equation
111,422.93 : 153,774.14 = 63,666.99 : x - Step 2: Convert to fraction form
111,422.93/153,774.14 = 63,666.99/x - Step 3: Cross multiply
111,422.93x = 153,774.14 × 63,666.99 - Step 4: Simplify right side
111,422.93x = 9,790,336,315.30 - Step 5: Solve for x
x = 9,790,336,315.30/111,422.93 - Step 6: Final answer
x = 87,866.45
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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.