Finding the Fourth Proportional to 258,129.30, 387,106.62 and 98,167.23
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Solution
The fourth proportional to 258,129.30, 387,106.62 and 98,167.23 is: 147,217.63
Step by Step Solution
- Step 1: Write the proportion equation
258,129.30 : 387,106.62 = 98,167.23 : x - Step 2: Convert to fraction form
258,129.30/387,106.62 = 98,167.23/x - Step 3: Cross multiply
258,129.30x = 387,106.62 × 98,167.23 - Step 4: Simplify right side
258,129.30x = 38,001,184,600.06 - Step 5: Solve for x
x = 38,001,184,600.06/258,129.30 - Step 6: Final answer
x = 147,217.63
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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.