Finding the Fourth Proportional to 105,125.36, 145,071.94 and 57,378.28
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Solution
The fourth proportional to 105,125.36, 145,071.94 and 57,378.28 is: 79,181.45
Step by Step Solution
- Step 1: Write the proportion equation
105,125.36 : 145,071.94 = 57,378.28 : x - Step 2: Convert to fraction form
105,125.36/145,071.94 = 57,378.28/x - Step 3: Cross multiply
105,125.36x = 145,071.94 × 57,378.28 - Step 4: Simplify right side
105,125.36x = 8,323,978,393.46 - Step 5: Solve for x
x = 8,323,978,393.46/105,125.36 - Step 6: Final answer
x = 79,181.45
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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.