Finding the Fourth Proportional to 137,291.72, 189,461.68 and 76,862.08
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Solution
The fourth proportional to 137,291.72, 189,461.68 and 76,862.08 is: 106,069.17
Step by Step Solution
- Step 1: Write the proportion equation
137,291.72 : 189,461.68 = 76,862.08 : x - Step 2: Convert to fraction form
137,291.72/189,461.68 = 76,862.08/x - Step 3: Cross multiply
137,291.72x = 189,461.68 × 76,862.08 - Step 4: Simplify right side
137,291.72x = 14,562,418,805.09 - Step 5: Solve for x
x = 14,562,418,805.09/137,291.72 - Step 6: Final answer
x = 106,069.17
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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.