Finding the Fourth Proportional to 135,539.74, 187,115.64 and 105,257.08
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Solution
The fourth proportional to 135,539.74, 187,115.64 and 105,257.08 is: 145,309.75
Step by Step Solution
- Step 1: Write the proportion equation
135,539.74 : 187,115.64 = 105,257.08 : x - Step 2: Convert to fraction form
135,539.74/187,115.64 = 105,257.08/x - Step 3: Cross multiply
135,539.74x = 187,115.64 × 105,257.08 - Step 4: Simplify right side
135,539.74x = 19,695,245,888.73 - Step 5: Solve for x
x = 19,695,245,888.73/135,539.74 - Step 6: Final answer
x = 145,309.75
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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.