Finding the Fourth Proportional to 128,024.08, 176,542.14 and 84,988.38
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Solution
The fourth proportional to 128,024.08, 176,542.14 and 84,988.38 is: 117,196.94
Step by Step Solution
- Step 1: Write the proportion equation
128,024.08 : 176,542.14 = 84,988.38 : x - Step 2: Convert to fraction form
128,024.08/176,542.14 = 84,988.38/x - Step 3: Cross multiply
128,024.08x = 176,542.14 × 84,988.38 - Step 4: Simplify right side
128,024.08x = 15,004,030,480.33 - Step 5: Solve for x
x = 15,004,030,480.33/128,024.08 - Step 6: Final answer
x = 117,196.94
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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.