Finding the Fourth Proportional to 135,939.08, 187,772.34 and 103,476.44
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Solution
The fourth proportional to 135,939.08, 187,772.34 and 103,476.44 is: 142,931.77
Step by Step Solution
- Step 1: Write the proportion equation
135,939.08 : 187,772.34 = 103,476.44 : x - Step 2: Convert to fraction form
135,939.08/187,772.34 = 103,476.44/x - Step 3: Cross multiply
135,939.08x = 187,772.34 × 103,476.44 - Step 4: Simplify right side
135,939.08x = 19,430,013,273.67 - Step 5: Solve for x
x = 19,430,013,273.67/135,939.08 - Step 6: Final answer
x = 142,931.77
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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.