Finding the Fourth Proportional to 128,123.84, 176,713.60 and 110,248.80
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Solution
The fourth proportional to 128,123.84, 176,713.60 and 110,248.80 is: 152,059.62
Step by Step Solution
- Step 1: Write the proportion equation
128,123.84 : 176,713.60 = 110,248.80 : x - Step 2: Convert to fraction form
128,123.84/176,713.60 = 110,248.80/x - Step 3: Cross multiply
128,123.84x = 176,713.60 × 110,248.80 - Step 4: Simplify right side
128,123.84x = 19,482,462,343.68 - Step 5: Solve for x
x = 19,482,462,343.68/128,123.84 - Step 6: Final answer
x = 152,059.62
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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.