Finding the Fourth Proportional to 103,615.64, 155,423.45 and 68,547.09
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Solution
The fourth proportional to 103,615.64, 155,423.45 and 68,547.09 is: 102,820.63
Step by Step Solution
- Step 1: Write the proportion equation
103,615.64 : 155,423.45 = 68,547.09 : x - Step 2: Convert to fraction form
103,615.64/155,423.45 = 68,547.09/x - Step 3: Cross multiply
103,615.64x = 155,423.45 × 68,547.09 - Step 4: Simplify right side
103,615.64x = 10,653,825,215.26 - Step 5: Solve for x
x = 10,653,825,215.26/103,615.64 - Step 6: Final answer
x = 102,820.63
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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.