Finding the Fourth Proportional to 134,781.60, 201,953.70 and 84,772.20
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Solution
The fourth proportional to 134,781.60, 201,953.70 and 84,772.20 is: 127,020.75
Step by Step Solution
- Step 1: Write the proportion equation
134,781.60 : 201,953.70 = 84,772.20 : x - Step 2: Convert to fraction form
134,781.60/201,953.70 = 84,772.20/x - Step 3: Cross multiply
134,781.60x = 201,953.70 × 84,772.20 - Step 4: Simplify right side
134,781.60x = 17,120,059,447.14 - Step 5: Solve for x
x = 17,120,059,447.14/134,781.60 - Step 6: Final answer
x = 127,020.75
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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.