Finding the Fourth Proportional to 151,785.81, 209,476.95 and 83,809.53
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Solution
The fourth proportional to 151,785.81, 209,476.95 and 83,809.53 is: 115,664.07
Step by Step Solution
- Step 1: Write the proportion equation
151,785.81 : 209,476.95 = 83,809.53 : x - Step 2: Convert to fraction form
151,785.81/209,476.95 = 83,809.53/x - Step 3: Cross multiply
151,785.81x = 209,476.95 × 83,809.53 - Step 4: Simplify right side
151,785.81x = 17,556,164,725.33 - Step 5: Solve for x
x = 17,556,164,725.33/151,785.81 - Step 6: Final answer
x = 115,664.07
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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.