Finding the Fourth Proportional to 128,034.08, 176,555.94 and 84,998.42
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Solution
The fourth proportional to 128,034.08, 176,555.94 and 84,998.42 is: 117,210.79
Step by Step Solution
- Step 1: Write the proportion equation
128,034.08 : 176,555.94 = 84,998.42 : x - Step 2: Convert to fraction form
128,034.08/176,555.94 = 84,998.42/x - Step 3: Cross multiply
128,034.08x = 176,555.94 × 84,998.42 - Step 4: Simplify right side
128,034.08x = 15,006,975,941.61 - Step 5: Solve for x
x = 15,006,975,941.61/128,034.08 - Step 6: Final answer
x = 117,210.79
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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.