Finding the Fourth Proportional to 156,768.81, 216,342.09 and 85,148.84
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Solution
The fourth proportional to 156,768.81, 216,342.09 and 85,148.84 is: 117,506.02
Step by Step Solution
- Step 1: Write the proportion equation
156,768.81 : 216,342.09 = 85,148.84 : x - Step 2: Convert to fraction form
156,768.81/216,342.09 = 85,148.84/x - Step 3: Cross multiply
156,768.81x = 216,342.09 × 85,148.84 - Step 4: Simplify right side
156,768.81x = 18,421,278,547.53 - Step 5: Solve for x
x = 18,421,278,547.53/156,768.81 - Step 6: Final answer
x = 117,506.02
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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.