Finding the Fourth Proportional to 145,957.14, 201,420.27 and 78,889.14
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Solution
The fourth proportional to 145,957.14, 201,420.27 and 78,889.14 is: 108,866.70
Step by Step Solution
- Step 1: Write the proportion equation
145,957.14 : 201,420.27 = 78,889.14 : x - Step 2: Convert to fraction form
145,957.14/201,420.27 = 78,889.14/x - Step 3: Cross multiply
145,957.14x = 201,420.27 × 78,889.14 - Step 4: Simplify right side
145,957.14x = 15,889,871,878.87 - Step 5: Solve for x
x = 15,889,871,878.87/145,957.14 - Step 6: Final answer
x = 108,866.70
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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.