Finding the Fourth Proportional to 128,126.56, 191,408.96 and 123,460.96
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Solution
The fourth proportional to 128,126.56, 191,408.96 and 123,460.96 is: 184,438.99
Step by Step Solution
- Step 1: Write the proportion equation
128,126.56 : 191,408.96 = 123,460.96 : x - Step 2: Convert to fraction form
128,126.56/191,408.96 = 123,460.96/x - Step 3: Cross multiply
128,126.56x = 191,408.96 × 123,460.96 - Step 4: Simplify right side
128,126.56x = 23,631,533,954.20 - Step 5: Solve for x
x = 23,631,533,954.20/128,126.56 - Step 6: Final answer
x = 184,438.99
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.