Finding the Fourth Proportional to 128,473.18, 177,297.73 and 70,333.99
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Solution
The fourth proportional to 128,473.18, 177,297.73 and 70,333.99 is: 97,063.50
Step by Step Solution
- Step 1: Write the proportion equation
128,473.18 : 177,297.73 = 70,333.99 : x - Step 2: Convert to fraction form
128,473.18/177,297.73 = 70,333.99/x - Step 3: Cross multiply
128,473.18x = 177,297.73 × 70,333.99 - Step 4: Simplify right side
128,473.18x = 12,470,056,149.76 - Step 5: Solve for x
x = 12,470,056,149.76/128,473.18 - Step 6: Final answer
x = 97,063.50
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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.