Finding the Fourth Proportional to 128,454.84, 177,262.23 and 71,088.80
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Solution
The fourth proportional to 128,454.84, 177,262.23 and 71,088.80 is: 98,099.53
Step by Step Solution
- Step 1: Write the proportion equation
128,454.84 : 177,262.23 = 71,088.80 : x - Step 2: Convert to fraction form
128,454.84/177,262.23 = 71,088.80/x - Step 3: Cross multiply
128,454.84x = 177,262.23 × 71,088.80 - Step 4: Simplify right side
128,454.84x = 12,601,359,216.02 - Step 5: Solve for x
x = 12,601,359,216.02/128,454.84 - Step 6: Final answer
x = 98,099.53
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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.