Finding the Fourth Proportional to 158,211.14, 218,330.07 and 86,590.99
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Solution
The fourth proportional to 158,211.14, 218,330.07 and 86,590.99 is: 119,494.85
Step by Step Solution
- Step 1: Write the proportion equation
158,211.14 : 218,330.07 = 86,590.99 : x - Step 2: Convert to fraction form
158,211.14/218,330.07 = 86,590.99/x - Step 3: Cross multiply
158,211.14x = 218,330.07 × 86,590.99 - Step 4: Simplify right side
158,211.14x = 18,905,416,908.07 - Step 5: Solve for x
x = 18,905,416,908.07/158,211.14 - Step 6: Final answer
x = 119,494.85
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1.5x scale
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.