Finding the Fourth Proportional to 135,842.87, 187,340.45 and 84,860.26
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Solution
The fourth proportional to 135,842.87, 187,340.45 and 84,860.26 is: 117,030.49
Step by Step Solution
- Step 1: Write the proportion equation
135,842.87 : 187,340.45 = 84,860.26 : x - Step 2: Convert to fraction form
135,842.87/187,340.45 = 84,860.26/x - Step 3: Cross multiply
135,842.87x = 187,340.45 × 84,860.26 - Step 4: Simplify right side
135,842.87x = 15,897,758,402.86 - Step 5: Solve for x
x = 15,897,758,402.86/135,842.87 - Step 6: Final answer
x = 117,030.49
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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.