Finding the Fourth Proportional to 145,828.40, 201,239.54 and 84,585.41
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Solution
The fourth proportional to 145,828.40, 201,239.54 and 84,585.41 is: 116,725.75
Step by Step Solution
- Step 1: Write the proportion equation
145,828.40 : 201,239.54 = 84,585.41 : x - Step 2: Convert to fraction form
145,828.40/201,239.54 = 84,585.41/x - Step 3: Cross multiply
145,828.40x = 201,239.54 × 84,585.41 - Step 4: Simplify right side
145,828.40x = 17,021,929,773.80 - Step 5: Solve for x
x = 17,021,929,773.80/145,828.40 - Step 6: Final answer
x = 116,725.75
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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.