Finding the Fourth Proportional to 149,831.24, 206,773.40 and 86,169.09
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Solution
The fourth proportional to 149,831.24, 206,773.40 and 86,169.09 is: 118,916.95
Step by Step Solution
- Step 1: Write the proportion equation
149,831.24 : 206,773.40 = 86,169.09 : x - Step 2: Convert to fraction form
149,831.24/206,773.40 = 86,169.09/x - Step 3: Cross multiply
149,831.24x = 206,773.40 × 86,169.09 - Step 4: Simplify right side
149,831.24x = 17,817,474,249.49 - Step 5: Solve for x
x = 17,817,474,249.49/149,831.24 - Step 6: Final answer
x = 118,916.95
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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.