Finding the Fourth Proportional to 128,145.71, 176,724.08 and 97,874.80
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Solution
The fourth proportional to 128,145.71, 176,724.08 and 97,874.80 is: 134,977.86
Step by Step Solution
- Step 1: Write the proportion equation
128,145.71 : 176,724.08 = 97,874.80 : x - Step 2: Convert to fraction form
128,145.71/176,724.08 = 97,874.80/x - Step 3: Cross multiply
128,145.71x = 176,724.08 × 97,874.80 - Step 4: Simplify right side
128,145.71x = 17,296,833,421.03 - Step 5: Solve for x
x = 17,296,833,421.03/128,145.71 - Step 6: Final answer
x = 134,977.86
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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.