Finding the Fourth Proportional to 128,126.44, 176,800.98 and 74,400.88
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Solution
The fourth proportional to 128,126.44, 176,800.98 and 74,400.88 is: 102,665.37
Step by Step Solution
- Step 1: Write the proportion equation
128,126.44 : 176,800.98 = 74,400.88 : x - Step 2: Convert to fraction form
128,126.44/176,800.98 = 74,400.88/x - Step 3: Cross multiply
128,126.44x = 176,800.98 × 74,400.88 - Step 4: Simplify right side
128,126.44x = 13,154,148,496.86 - Step 5: Solve for x
x = 13,154,148,496.86/128,126.44 - Step 6: Final answer
x = 102,665.37
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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.