Finding the Fourth Proportional to 135,697.20, 187,237.92 and 81,946.23
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Solution
The fourth proportional to 135,697.20, 187,237.92 and 81,946.23 is: 113,071.17
Step by Step Solution
- Step 1: Write the proportion equation
135,697.20 : 187,237.92 = 81,946.23 : x - Step 2: Convert to fraction form
135,697.20/187,237.92 = 81,946.23/x - Step 3: Cross multiply
135,697.20x = 187,237.92 × 81,946.23 - Step 4: Simplify right side
135,697.20x = 15,343,441,657.04 - Step 5: Solve for x
x = 15,343,441,657.04/135,697.20 - Step 6: Final answer
x = 113,071.17
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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.