Finding the Fourth Proportional to 122,350.68, 168,885.90 and 77,104.98
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Solution
The fourth proportional to 122,350.68, 168,885.90 and 77,104.98 is: 106,431.32
Step by Step Solution
- Step 1: Write the proportion equation
122,350.68 : 168,885.90 = 77,104.98 : x - Step 2: Convert to fraction form
122,350.68/168,885.90 = 77,104.98/x - Step 3: Cross multiply
122,350.68x = 168,885.90 × 77,104.98 - Step 4: Simplify right side
122,350.68x = 13,021,943,941.78 - Step 5: Solve for x
x = 13,021,943,941.78/122,350.68 - Step 6: Final answer
x = 106,431.32
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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.