Finding the Fourth Proportional to 135,741.21, 187,345.36 and 75,331.26
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Solution
The fourth proportional to 135,741.21, 187,345.36 and 75,331.26 is: 103,969.62
Step by Step Solution
- Step 1: Write the proportion equation
135,741.21 : 187,345.36 = 75,331.26 : x - Step 2: Convert to fraction form
135,741.21/187,345.36 = 75,331.26/x - Step 3: Cross multiply
135,741.21x = 187,345.36 × 75,331.26 - Step 4: Simplify right side
135,741.21x = 14,112,962,023.95 - Step 5: Solve for x
x = 14,112,962,023.95/135,741.21 - Step 6: Final answer
x = 103,969.62
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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.