Finding the Fourth Proportional to 145,655.68, 201,008.64 and 81,995.80
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Solution
The fourth proportional to 145,655.68, 201,008.64 and 81,995.80 is: 113,156.34
Step by Step Solution
- Step 1: Write the proportion equation
145,655.68 : 201,008.64 = 81,995.80 : x - Step 2: Convert to fraction form
145,655.68/201,008.64 = 81,995.80/x - Step 3: Cross multiply
145,655.68x = 201,008.64 × 81,995.80 - Step 4: Simplify right side
145,655.68x = 16,481,864,243.71 - Step 5: Solve for x
x = 16,481,864,243.71/145,655.68 - Step 6: Final answer
x = 113,156.34
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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.