Finding the Fourth Proportional to 122,242.20, 168,730.08 and 79,807.08
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Solution
The fourth proportional to 122,242.20, 168,730.08 and 79,807.08 is: 110,157.17
Step by Step Solution
- Step 1: Write the proportion equation
122,242.20 : 168,730.08 = 79,807.08 : x - Step 2: Convert to fraction form
122,242.20/168,730.08 = 79,807.08/x - Step 3: Cross multiply
122,242.20x = 168,730.08 × 79,807.08 - Step 4: Simplify right side
122,242.20x = 13,465,854,992.97 - Step 5: Solve for x
x = 13,465,854,992.97/122,242.20 - Step 6: Final answer
x = 110,157.17
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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.