Finding the Fourth Proportional to 137,291.48, 189,460.82 and 76,862.68
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Solution
The fourth proportional to 137,291.48, 189,460.82 and 76,862.68 is: 106,069.70
Step by Step Solution
- Step 1: Write the proportion equation
137,291.48 : 189,460.82 = 76,862.68 : x - Step 2: Convert to fraction form
137,291.48/189,460.82 = 76,862.68/x - Step 3: Cross multiply
137,291.48x = 189,460.82 × 76,862.68 - Step 4: Simplify right side
137,291.48x = 14,562,466,380.20 - Step 5: Solve for x
x = 14,562,466,380.20/137,291.48 - Step 6: Final answer
x = 106,069.70
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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.