Finding the Fourth Proportional to 197,782.61, 272,941.32 and 107,138.58
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Solution
The fourth proportional to 197,782.61, 272,941.32 and 107,138.58 is: 147,851.96
Step by Step Solution
- Step 1: Write the proportion equation
197,782.61 : 272,941.32 = 107,138.58 : x - Step 2: Convert to fraction form
197,782.61/272,941.32 = 107,138.58/x - Step 3: Cross multiply
197,782.61x = 272,941.32 × 107,138.58 - Step 4: Simplify right side
197,782.61x = 29,242,545,448.13 - Step 5: Solve for x
x = 29,242,545,448.13/197,782.61 - Step 6: Final answer
x = 147,851.96
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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.