Finding the Fourth Proportional to 156,732.67, 235,038.84 and 76,721.28
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Solution
The fourth proportional to 156,732.67, 235,038.84 and 76,721.28 is: 115,052.47
Step by Step Solution
- Step 1: Write the proportion equation
156,732.67 : 235,038.84 = 76,721.28 : x - Step 2: Convert to fraction form
156,732.67/235,038.84 = 76,721.28/x - Step 3: Cross multiply
156,732.67x = 235,038.84 × 76,721.28 - Step 4: Simplify right side
156,732.67x = 18,032,480,654.52 - Step 5: Solve for x
x = 18,032,480,654.52/156,732.67 - Step 6: Final answer
x = 115,052.47
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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.