Finding the Fourth Proportional to 129,602.36, 178,852.06 and 72,245.32
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Solution
The fourth proportional to 129,602.36, 178,852.06 and 72,245.32 is: 99,698.99
Step by Step Solution
- Step 1: Write the proportion equation
129,602.36 : 178,852.06 = 72,245.32 : x - Step 2: Convert to fraction form
129,602.36/178,852.06 = 72,245.32/x - Step 3: Cross multiply
129,602.36x = 178,852.06 × 72,245.32 - Step 4: Simplify right side
129,602.36x = 12,921,224,307.36 - Step 5: Solve for x
x = 12,921,224,307.36/129,602.36 - Step 6: Final answer
x = 99,698.99
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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.