Finding the Fourth Proportional to 129,785.96, 179,088.36 and 76,058.68
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Solution
The fourth proportional to 129,785.96, 179,088.36 and 76,058.68 is: 104,951.45
Step by Step Solution
- Step 1: Write the proportion equation
129,785.96 : 179,088.36 = 76,058.68 : x - Step 2: Convert to fraction form
129,785.96/179,088.36 = 76,058.68/x - Step 3: Cross multiply
129,785.96x = 179,088.36 × 76,058.68 - Step 4: Simplify right side
129,785.96x = 13,621,224,264.96 - Step 5: Solve for x
x = 13,621,224,264.96/129,785.96 - Step 6: Final answer
x = 104,951.45
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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.