Finding the Fourth Proportional to 158,349.60, 218,521.80 and 86,734.08
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Solution
The fourth proportional to 158,349.60, 218,521.80 and 86,734.08 is: 119,692.68
Step by Step Solution
- Step 1: Write the proportion equation
158,349.60 : 218,521.80 = 86,734.08 : x - Step 2: Convert to fraction form
158,349.60/218,521.80 = 86,734.08/x - Step 3: Cross multiply
158,349.60x = 218,521.80 × 86,734.08 - Step 4: Simplify right side
158,349.60x = 18,953,287,282.94 - Step 5: Solve for x
x = 18,953,287,282.94/158,349.60 - Step 6: Final answer
x = 119,692.68
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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.