Finding the Fourth Proportional to 158,306.04, 218,458.44 and 86,689.08
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Solution
The fourth proportional to 158,306.04, 218,458.44 and 86,689.08 is: 119,628.80
Step by Step Solution
- Step 1: Write the proportion equation
158,306.04 : 218,458.44 = 86,689.08 : x - Step 2: Convert to fraction form
158,306.04/218,458.44 = 86,689.08/x - Step 3: Cross multiply
158,306.04x = 218,458.44 × 86,689.08 - Step 4: Simplify right side
158,306.04x = 18,937,961,181.84 - Step 5: Solve for x
x = 18,937,961,181.84/158,306.04 - Step 6: Final answer
x = 119,628.80
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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.