Finding the Fourth Proportional to 128,948.24, 177,959.16 and 71,591.06
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Solution
The fourth proportional to 128,948.24, 177,959.16 and 71,591.06 is: 98,801.54
Step by Step Solution
- Step 1: Write the proportion equation
128,948.24 : 177,959.16 = 71,591.06 : x - Step 2: Convert to fraction form
128,948.24/177,959.16 = 71,591.06/x - Step 3: Cross multiply
128,948.24x = 177,959.16 × 71,591.06 - Step 4: Simplify right side
128,948.24x = 12,740,284,901.11 - Step 5: Solve for x
x = 12,740,284,901.11/128,948.24 - Step 6: Final answer
x = 98,801.54
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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.