Finding the Fourth Proportional to 98,864.84, 136,432.68 and 53,542.68
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Solution
The fourth proportional to 98,864.84, 136,432.68 and 53,542.68 is: 73,888.47
Step by Step Solution
- Step 1: Write the proportion equation
98,864.84 : 136,432.68 = 53,542.68 : x - Step 2: Convert to fraction form
98,864.84/136,432.68 = 53,542.68/x - Step 3: Cross multiply
98,864.84x = 136,432.68 × 53,542.68 - Step 4: Simplify right side
98,864.84x = 7,304,971,326.78 - Step 5: Solve for x
x = 7,304,971,326.78/98,864.84 - Step 6: Final answer
x = 73,888.47
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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.