Finding the Fourth Proportional to 103,929.96, 143,327.70 and 68,106.90
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Solution
The fourth proportional to 103,929.96, 143,327.70 and 68,106.90 is: 93,924.84
Step by Step Solution
- Step 1: Write the proportion equation
103,929.96 : 143,327.70 = 68,106.90 : x - Step 2: Convert to fraction form
103,929.96/143,327.70 = 68,106.90/x - Step 3: Cross multiply
103,929.96x = 143,327.70 × 68,106.90 - Step 4: Simplify right side
103,929.96x = 9,761,605,331.13 - Step 5: Solve for x
x = 9,761,605,331.13/103,929.96 - Step 6: Final answer
x = 93,924.84
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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.