Finding the Fourth Proportional to 103,639.19, 143,021.36 and 58,927.19
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Solution
The fourth proportional to 103,639.19, 143,021.36 and 58,927.19 is: 81,319.11
Step by Step Solution
- Step 1: Write the proportion equation
103,639.19 : 143,021.36 = 58,927.19 : x - Step 2: Convert to fraction form
103,639.19/143,021.36 = 58,927.19/x - Step 3: Cross multiply
103,639.19x = 143,021.36 × 58,927.19 - Step 4: Simplify right side
103,639.19x = 8,427,846,854.78 - Step 5: Solve for x
x = 8,427,846,854.78/103,639.19 - Step 6: Final answer
x = 81,319.11
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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.