Finding the Fourth Proportional to 135,134.36, 186,484.20 and 74,706.54
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Solution
The fourth proportional to 135,134.36, 186,484.20 and 74,706.54 is: 103,094.35
Step by Step Solution
- Step 1: Write the proportion equation
135,134.36 : 186,484.20 = 74,706.54 : x - Step 2: Convert to fraction form
135,134.36/186,484.20 = 74,706.54/x - Step 3: Cross multiply
135,134.36x = 186,484.20 × 74,706.54 - Step 4: Simplify right side
135,134.36x = 13,931,589,346.67 - Step 5: Solve for x
x = 13,931,589,346.67/135,134.36 - Step 6: Final answer
x = 103,094.35
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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.