Finding the Fourth Proportional to 117,397.68, 176,090.04 and 85,840.08
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Solution
The fourth proportional to 117,397.68, 176,090.04 and 85,840.08 is: 128,755.38
Step by Step Solution
- Step 1: Write the proportion equation
117,397.68 : 176,090.04 = 85,840.08 : x - Step 2: Convert to fraction form
117,397.68/176,090.04 = 85,840.08/x - Step 3: Cross multiply
117,397.68x = 176,090.04 × 85,840.08 - Step 4: Simplify right side
117,397.68x = 15,115,583,120.80 - Step 5: Solve for x
x = 15,115,583,120.80/117,397.68 - Step 6: Final answer
x = 128,755.38
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.