Finding the Fourth Proportional to 138,317.55, 207,312.30 and 124,211.40
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Solution
The fourth proportional to 138,317.55, 207,312.30 and 124,211.40 is: 186,169.80
Step by Step Solution
- Step 1: Write the proportion equation
138,317.55 : 207,312.30 = 124,211.40 : x - Step 2: Convert to fraction form
138,317.55/207,312.30 = 124,211.40/x - Step 3: Cross multiply
138,317.55x = 207,312.30 × 124,211.40 - Step 4: Simplify right side
138,317.55x = 25,750,551,020.22 - Step 5: Solve for x
x = 25,750,551,020.22/138,317.55 - Step 6: Final answer
x = 186,169.80
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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.