Finding the Fourth Proportional to 128,932.84, 177,881.70 and 84,246.76
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Solution
The fourth proportional to 128,932.84, 177,881.70 and 84,246.76 is: 116,230.72
Step by Step Solution
- Step 1: Write the proportion equation
128,932.84 : 177,881.70 = 84,246.76 : x - Step 2: Convert to fraction form
128,932.84/177,881.70 = 84,246.76/x - Step 3: Cross multiply
128,932.84x = 177,881.70 × 84,246.76 - Step 4: Simplify right side
128,932.84x = 14,985,956,888.29 - Step 5: Solve for x
x = 14,985,956,888.29/128,932.84 - Step 6: Final answer
x = 116,230.72
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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.