Finding the Fourth Proportional to 105,215.12, 145,192.92 and 57,468.08
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Solution
The fourth proportional to 105,215.12, 145,192.92 and 57,468.08 is: 79,303.80
Step by Step Solution
- Step 1: Write the proportion equation
105,215.12 : 145,192.92 = 57,468.08 : x - Step 2: Convert to fraction form
105,215.12/145,192.92 = 57,468.08/x - Step 3: Cross multiply
105,215.12x = 145,192.92 × 57,468.08 - Step 4: Simplify right side
105,215.12x = 8,343,958,341.99 - Step 5: Solve for x
x = 8,343,958,341.99/105,215.12 - Step 6: Final answer
x = 79,303.80
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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.