Finding the Fourth Proportional to 86,842.80, 130,069.80 and 84,898.80
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Solution
The fourth proportional to 86,842.80, 130,069.80 and 84,898.80 is: 127,158.15
Step by Step Solution
- Step 1: Write the proportion equation
86,842.80 : 130,069.80 = 84,898.80 : x - Step 2: Convert to fraction form
86,842.80/130,069.80 = 84,898.80/x - Step 3: Cross multiply
86,842.80x = 130,069.80 × 84,898.80 - Step 4: Simplify right side
86,842.80x = 11,042,769,936.24 - Step 5: Solve for x
x = 11,042,769,936.24/86,842.80 - Step 6: Final answer
x = 127,158.15
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.