Finding the Fourth Proportional to 137,923.94, 190,459.54 and 87,026.99
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Solution
The fourth proportional to 137,923.94, 190,459.54 and 87,026.99 is: 120,175.79
Step by Step Solution
- Step 1: Write the proportion equation
137,923.94 : 190,459.54 = 87,026.99 : x - Step 2: Convert to fraction form
137,923.94/190,459.54 = 87,026.99/x - Step 3: Cross multiply
137,923.94x = 190,459.54 × 87,026.99 - Step 4: Simplify right side
137,923.94x = 16,575,119,149.94 - Step 5: Solve for x
x = 16,575,119,149.94/137,923.94 - Step 6: Final answer
x = 120,175.79
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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.