Finding the Fourth Proportional to 157,950.02, 217,971.20 and 86,330.09
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Solution
The fourth proportional to 157,950.02, 217,971.20 and 86,330.09 is: 119,135.62
Step by Step Solution
- Step 1: Write the proportion equation
157,950.02 : 217,971.20 = 86,330.09 : x - Step 2: Convert to fraction form
157,950.02/217,971.20 = 86,330.09/x - Step 3: Cross multiply
157,950.02x = 217,971.20 × 86,330.09 - Step 4: Simplify right side
157,950.02x = 18,817,474,074.16 - Step 5: Solve for x
x = 18,817,474,074.16/157,950.02 - Step 6: Final answer
x = 119,135.62
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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.