Finding the Fourth Proportional to 145,956.70, 201,420.51 and 78,888.70
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Solution
The fourth proportional to 145,956.70, 201,420.51 and 78,888.70 is: 108,866.55
Step by Step Solution
- Step 1: Write the proportion equation
145,956.70 : 201,420.51 = 78,888.70 : x - Step 2: Convert to fraction form
145,956.70/201,420.51 = 78,888.70/x - Step 3: Cross multiply
145,956.70x = 201,420.51 × 78,888.70 - Step 4: Simplify right side
145,956.70x = 15,889,802,187.24 - Step 5: Solve for x
x = 15,889,802,187.24/145,956.70 - Step 6: Final answer
x = 108,866.55
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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.