Finding the Fourth Proportional to 135,986.68, 187,688.40 and 86,896.84
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Solution
The fourth proportional to 135,986.68, 187,688.40 and 86,896.84 is: 119,934.75
Step by Step Solution
- Step 1: Write the proportion equation
135,986.68 : 187,688.40 = 86,896.84 : x - Step 2: Convert to fraction form
135,986.68/187,688.40 = 86,896.84/x - Step 3: Cross multiply
135,986.68x = 187,688.40 × 86,896.84 - Step 4: Simplify right side
135,986.68x = 16,309,528,864.66 - Step 5: Solve for x
x = 16,309,528,864.66/135,986.68 - Step 6: Final answer
x = 119,934.75
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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.