Finding the Fourth Proportional to 129,031.68, 193,547.53 and 75,804.96
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Solution
The fourth proportional to 129,031.68, 193,547.53 and 75,804.96 is: 113,707.45
Step by Step Solution
- Step 1: Write the proportion equation
129,031.68 : 193,547.53 = 75,804.96 : x - Step 2: Convert to fraction form
129,031.68/193,547.53 = 75,804.96/x - Step 3: Cross multiply
129,031.68x = 193,547.53 × 75,804.96 - Step 4: Simplify right side
129,031.68x = 14,671,863,163.91 - Step 5: Solve for x
x = 14,671,863,163.91/129,031.68 - Step 6: Final answer
x = 113,707.45
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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.