Finding the Fourth Proportional to 115,789.40, 159,820.80 and 68,058.08
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Solution
The fourth proportional to 115,789.40, 159,820.80 and 68,058.08 is: 93,938.62
Step by Step Solution
- Step 1: Write the proportion equation
115,789.40 : 159,820.80 = 68,058.08 : x - Step 2: Convert to fraction form
115,789.40/159,820.80 = 68,058.08/x - Step 3: Cross multiply
115,789.40x = 159,820.80 × 68,058.08 - Step 4: Simplify right side
115,789.40x = 10,877,096,792.06 - Step 5: Solve for x
x = 10,877,096,792.06/115,789.40 - Step 6: Final answer
x = 93,938.62
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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.