Finding the Fourth Proportional to 103,967.93, 143,476.08 and 56,221.62
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Solution
The fourth proportional to 103,967.93, 143,476.08 and 56,221.62 is: 77,586.02
Step by Step Solution
- Step 1: Write the proportion equation
103,967.93 : 143,476.08 = 56,221.62 : x - Step 2: Convert to fraction form
103,967.93/143,476.08 = 56,221.62/x - Step 3: Cross multiply
103,967.93x = 143,476.08 × 56,221.62 - Step 4: Simplify right side
103,967.93x = 8,066,457,777.88 - Step 5: Solve for x
x = 8,066,457,777.88/103,967.93 - Step 6: Final answer
x = 77,586.02
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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.