Finding the Fourth Proportional to 189,528.31, 261,547.05 and 103,487.02
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Solution
The fourth proportional to 189,528.31, 261,547.05 and 103,487.02 is: 142,810.99
Step by Step Solution
- Step 1: Write the proportion equation
189,528.31 : 261,547.05 = 103,487.02 : x - Step 2: Convert to fraction form
189,528.31/261,547.05 = 103,487.02/x - Step 3: Cross multiply
189,528.31x = 261,547.05 × 103,487.02 - Step 4: Simplify right side
189,528.31x = 27,066,724,237.44 - Step 5: Solve for x
x = 27,066,724,237.44/189,528.31 - Step 6: Final answer
x = 142,810.99
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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.