Finding the Fourth Proportional to 138,170.80, 207,134.70 and 93,653.20
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Solution
The fourth proportional to 138,170.80, 207,134.70 and 93,653.20 is: 140,397.45
Step by Step Solution
- Step 1: Write the proportion equation
138,170.80 : 207,134.70 = 93,653.20 : x - Step 2: Convert to fraction form
138,170.80/207,134.70 = 93,653.20/x - Step 3: Cross multiply
138,170.80x = 207,134.70 × 93,653.20 - Step 4: Simplify right side
138,170.80x = 19,398,827,486.04 - Step 5: Solve for x
x = 19,398,827,486.04/138,170.80 - Step 6: Final answer
x = 140,397.45
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.