Finding the Fourth Proportional to 128,146.14, 176,840.97 and 70,789.41
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Solution
The fourth proportional to 128,146.14, 176,840.97 and 70,789.41 is: 97,689.00
Step by Step Solution
- Step 1: Write the proportion equation
128,146.14 : 176,840.97 = 70,789.41 : x - Step 2: Convert to fraction form
128,146.14/176,840.97 = 70,789.41/x - Step 3: Cross multiply
128,146.14x = 176,840.97 × 70,789.41 - Step 4: Simplify right side
128,146.14x = 12,518,467,930.13 - Step 5: Solve for x
x = 12,518,467,930.13/128,146.14 - Step 6: Final answer
x = 97,689.00
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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.