Finding the Fourth Proportional to 138,430.14, 207,645.30 and 38,590.62
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Solution
The fourth proportional to 138,430.14, 207,645.30 and 38,590.62 is: 57,885.96
Step by Step Solution
- Step 1: Write the proportion equation
138,430.14 : 207,645.30 = 38,590.62 : x - Step 2: Convert to fraction form
138,430.14/207,645.30 = 38,590.62/x - Step 3: Cross multiply
138,430.14x = 207,645.30 × 38,590.62 - Step 4: Simplify right side
138,430.14x = 8,013,160,867.09 - Step 5: Solve for x
x = 8,013,160,867.09/138,430.14 - Step 6: Final answer
x = 57,885.96
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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.