Finding the Fourth Proportional to 137,781.97, 190,125.99 and 77,338.76
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Solution
The fourth proportional to 137,781.97, 190,125.99 and 77,338.76 is: 106,720.12
Step by Step Solution
- Step 1: Write the proportion equation
137,781.97 : 190,125.99 = 77,338.76 : x - Step 2: Convert to fraction form
137,781.97/190,125.99 = 77,338.76/x - Step 3: Cross multiply
137,781.97x = 190,125.99 × 77,338.76 - Step 4: Simplify right side
137,781.97x = 14,704,107,923.68 - Step 5: Solve for x
x = 14,704,107,923.68/137,781.97 - Step 6: Final answer
x = 106,720.12
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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.