Finding the Fourth Proportional to 135,568.76, 187,089.68 and 81,843.28
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Solution
The fourth proportional to 135,568.76, 187,089.68 and 81,843.28 is: 112,946.62
Step by Step Solution
- Step 1: Write the proportion equation
135,568.76 : 187,089.68 = 81,843.28 : x - Step 2: Convert to fraction form
135,568.76/187,089.68 = 81,843.28/x - Step 3: Cross multiply
135,568.76x = 187,089.68 × 81,843.28 - Step 4: Simplify right side
135,568.76x = 15,312,032,802.23 - Step 5: Solve for x
x = 15,312,032,802.23/135,568.76 - Step 6: Final answer
x = 112,946.62
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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.