Finding the Fourth Proportional to 137,781.99, 190,125.99 and 77,338.77
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Solution
The fourth proportional to 137,781.99, 190,125.99 and 77,338.77 is: 106,720.12
Step by Step Solution
- Step 1: Write the proportion equation
137,781.99 : 190,125.99 = 77,338.77 : x - Step 2: Convert to fraction form
137,781.99/190,125.99 = 77,338.77/x - Step 3: Cross multiply
137,781.99x = 190,125.99 × 77,338.77 - Step 4: Simplify right side
137,781.99x = 14,704,110,211.63 - Step 5: Solve for x
x = 14,704,110,211.63/137,781.99 - Step 6: Final answer
x = 106,720.12
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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.