Finding the Fourth Proportional to 155,708.79, 214,878.10 and 84,088.80
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Solution
The fourth proportional to 155,708.79, 214,878.10 and 84,088.80 is: 116,042.53
Step by Step Solution
- Step 1: Write the proportion equation
155,708.79 : 214,878.10 = 84,088.80 : x - Step 2: Convert to fraction form
155,708.79/214,878.10 = 84,088.80/x - Step 3: Cross multiply
155,708.79x = 214,878.10 × 84,088.80 - Step 4: Simplify right side
155,708.79x = 18,068,841,575.28 - Step 5: Solve for x
x = 18,068,841,575.28/155,708.79 - Step 6: Final answer
x = 116,042.53
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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.