Finding the Fourth Proportional to 197,779.78, 272,937.40 and 107,135.74
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Solution
The fourth proportional to 197,779.78, 272,937.40 and 107,135.74 is: 147,848.03
Step by Step Solution
- Step 1: Write the proportion equation
197,779.78 : 272,937.40 = 107,135.74 : x - Step 2: Convert to fraction form
197,779.78/272,937.40 = 107,135.74/x - Step 3: Cross multiply
197,779.78x = 272,937.40 × 107,135.74 - Step 4: Simplify right side
197,779.78x = 29,241,350,322.68 - Step 5: Solve for x
x = 29,241,350,322.68/197,779.78 - Step 6: Final answer
x = 147,848.03
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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.