Finding the Fourth Proportional to 236,785.61, 354,956.97 and 86,985.68
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Solution
The fourth proportional to 236,785.61, 354,956.97 and 86,985.68 is: 130,397.17
Step by Step Solution
- Step 1: Write the proportion equation
236,785.61 : 354,956.97 = 86,985.68 : x - Step 2: Convert to fraction form
236,785.61/354,956.97 = 86,985.68/x - Step 3: Cross multiply
236,785.61x = 354,956.97 × 86,985.68 - Step 4: Simplify right side
236,785.61x = 30,876,171,631.40 - Step 5: Solve for x
x = 30,876,171,631.40/236,785.61 - Step 6: Final answer
x = 130,397.17
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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.