Finding the Fourth Proportional to 128,220.14, 176,944.33 and 70,078.04
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Solution
The fourth proportional to 128,220.14, 176,944.33 and 70,078.04 is: 96,707.99
Step by Step Solution
- Step 1: Write the proportion equation
128,220.14 : 176,944.33 = 70,078.04 : x - Step 2: Convert to fraction form
128,220.14/176,944.33 = 70,078.04/x - Step 3: Cross multiply
128,220.14x = 176,944.33 × 70,078.04 - Step 4: Simplify right side
128,220.14x = 12,399,911,835.51 - Step 5: Solve for x
x = 12,399,911,835.51/128,220.14 - Step 6: Final answer
x = 96,707.99
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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.