Finding the Fourth Proportional to 111,228.84, 153,565.56 and 85,687.14
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Solution
The fourth proportional to 111,228.84, 153,565.56 and 85,687.14 is: 118,301.99
Step by Step Solution
- Step 1: Write the proportion equation
111,228.84 : 153,565.56 = 85,687.14 : x - Step 2: Convert to fraction form
111,228.84/153,565.56 = 85,687.14/x - Step 3: Cross multiply
111,228.84x = 153,565.56 × 85,687.14 - Step 4: Simplify right side
111,228.84x = 13,158,593,638.90 - Step 5: Solve for x
x = 13,158,593,638.90/111,228.84 - Step 6: Final answer
x = 118,301.99
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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.