Finding the Fourth Proportional to 156,743.10, 235,215.45 and 86,672.70
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Solution
The fourth proportional to 156,743.10, 235,215.45 and 86,672.70 is: 130,064.79
Step by Step Solution
- Step 1: Write the proportion equation
156,743.10 : 235,215.45 = 86,672.70 : x - Step 2: Convert to fraction form
156,743.10/235,215.45 = 86,672.70/x - Step 3: Cross multiply
156,743.10x = 235,215.45 × 86,672.70 - Step 4: Simplify right side
156,743.10x = 20,386,758,133.22 - Step 5: Solve for x
x = 20,386,758,133.22/156,743.10 - Step 6: Final answer
x = 130,064.79
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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.