Finding the Fourth Proportional to 105,164.01, 145,129.74 and 57,420.99
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Solution
The fourth proportional to 105,164.01, 145,129.74 and 57,420.99 is: 79,242.83
Step by Step Solution
- Step 1: Write the proportion equation
105,164.01 : 145,129.74 = 57,420.99 : x - Step 2: Convert to fraction form
105,164.01/145,129.74 = 57,420.99/x - Step 3: Cross multiply
105,164.01x = 145,129.74 × 57,420.99 - Step 4: Simplify right side
105,164.01x = 8,333,493,349.24 - Step 5: Solve for x
x = 8,333,493,349.24/105,164.01 - Step 6: Final answer
x = 79,242.83
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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.