Finding the Fourth Proportional to 131,483.84, 181,444.20 and 74,913.44
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Solution
The fourth proportional to 131,483.84, 181,444.20 and 74,913.44 is: 103,378.55
Step by Step Solution
- Step 1: Write the proportion equation
131,483.84 : 181,444.20 = 74,913.44 : x - Step 2: Convert to fraction form
131,483.84/181,444.20 = 74,913.44/x - Step 3: Cross multiply
131,483.84x = 181,444.20 × 74,913.44 - Step 4: Simplify right side
131,483.84x = 13,592,609,190.05 - Step 5: Solve for x
x = 13,592,609,190.05/131,483.84 - Step 6: Final answer
x = 103,378.55
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1.5x scale
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.