Finding the Fourth Proportional to 128,134.74, 176,909.14 and 114,682.62
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Solution
The fourth proportional to 128,134.74, 176,909.14 and 114,682.62 is: 158,336.48
Step by Step Solution
- Step 1: Write the proportion equation
128,134.74 : 176,909.14 = 114,682.62 : x - Step 2: Convert to fraction form
128,134.74/176,909.14 = 114,682.62/x - Step 3: Cross multiply
128,134.74x = 176,909.14 × 114,682.62 - Step 4: Simplify right side
128,134.74x = 20,288,403,677.15 - Step 5: Solve for x
x = 20,288,403,677.15/128,134.74 - Step 6: Final answer
x = 158,336.48
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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.